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Probability Concepts - Statistics Questions asked by Filo students

Question 1

Question 4 (1 point) What percent of people own a Ford? (Round to the nearest percent). a

19%

13%

18.5%

18%

Topic:

Probability Concepts

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Question 2

Question 5 (1 point) Life of AA batteries, in minutes How many batteries had a life of less than 410 minutes? Blank 1: Review Answers III

Topic:

Probability Concepts

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Question 3

2.1.14 In an injection-molding operation, the length and width, denoted as

X

and

Y

, respectively, of each molded part are evaluated. Let A denote the event of

48 < X < 52

centimeters

B

denote the event of

9 < Y < 11

centimeters Construct a Venn diagram that includes these events. Shade the areas that represent the following:

$A$
$A \cap B$
$A^{'} \cup B$
$A \cap B$
If these events were mutually exclusive, how successful would this production operation be? Would the process produce parts with $X = 50$ centimeters and $Y = 10$ centimeters?

Topic:

Probability Concepts

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Question 4

Name: Date: (Remember to show work, in order to receive full credit! If you run out of room, work out the problems on the back of this sheet.) Classify each variable listed as discrete or continuous. 1a. The volume inside a shoe box 1b. Number of dollar bills retrieved from a vending machine 1c. The attendance figure for a college bowl game Recently shoppers were asked how many gift certificates they've bought at the mall last year. The following results were tabulated:

Gift certificates purchased Percent of shoppers 0 41% 1 22% 2 14% 3 10% 4 8% 5 (or more) 5%

2a. Find the mean (or expected) number of gift certificates a shopper buys at the mall. (Treat "5 (or more)" as if it's " 5 ".) 2b. What is the probability that a shopper selected at random bought more than two gift certificates? According to a public opinion poll,

60%

of a town's residents want their mayor impeached. A panel of five randomly selected residents will decide if she goes. 3a. Find the mean and standard deviation for this panel. 3b. Find the probability that all five vote to impeach. 3c. Find the probability that a majority of the panel will vote to impeach. Formulas Expected value: Mean (binomial case): Standard deviation (binomial case):

μ = n p σ \overline{n pq}

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Probability Concepts

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Question 5

The histogram shows information about scores of the games played by the Jaguars basketball team during one season. Jaguars' Basketball Scores of Basketball Game How many games did the Jaguars play in the season? a 7 b 30 c 50 d 84

Topic:

Probability Concepts

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Question 6

Write esch int in the indcated form. Vyou nees to use" " to indicate a patien, make sure to list at least four elements of the set. As you aveate beise, remember thec the catirai fuebers are wat the courting rumbers. This means that 0 is not a natural number, and negative numbers are. not natural Aumben ether (a) Roster form:

{8, 12, 16)

Descrstive form (Owos one) (D) Oevorive formi the set of ons nutini tunters. Raver formi

?

Topic:

Probability Concepts

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Question 7

Over the last three evenings, Maya received a total of 78 phone calls at the call center. The second evening, she received 6 fewer calls than the first evening. The third evening, she received 2 times as many cats as the first evening. How many phone calls did she receive each evening? Number of phone calls the first eversing 0 5

Topic:

Probability Concepts

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Question 8

Write each set in the indicated form. If you need to use "..." to indicate a pattern, make sure to list at least the first four elements of the set. (a) Roster form:

{13, 14, 15, 16}

Set-builder form: (Choose one) (b) Set-builder form:

{{x ∣ x is a natural number and x > 13} {x ∣ x is a natural number and x < 16}

Roster form:

{{x ∣ x is a natural number and 13 \leq x \leq 16) (x ∣ x is a natural number and 13 < x < 16)

Topic:

Probability Concepts

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Question 9

Unions, intersections, and complements involving 2 sets Sets

A

and

B

are subsets of the universal set

U

. These sets are defined as follows.

U = {m, q, s, x, y} A = {m, q, s} B = {q, s, y}

Find the following sets. Write your answer in roster form or as

\emptyset

. (a)

(A \cup B)^{'} =

(b)

A^{'} \cap B =

Topic:

Probability Concepts

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Question 10

Sets

A, B

, and

C

are subsets of the universat set

U

. These sets are defined as follows.

U = (f, g, h, p, q, r, x, y, z) A = (f, g, h, q, r) B = (q, r, x, z) C = (h, p, q, z)

Find

C \cup (B^{'} \cap A)

. Write your answer in master form or as

\emptyset

C \cup (B \cdot \cap A) = \emptyset

Topic:

Probability Concepts

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Question 11

Here are the meanings of some of the symbols that appear in the statements below. -

\subseteq

means "is a subset of." -

C

means "is a proper subset of." - Z means "is not a subset of." -

\emptyset

is the empty set. For each statement, decide if it is true or false.

Topic:

Probability Concepts

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Question 12

Question 2 (1 point) In five basketball games, a player scores the following points: 13, 21, 21, 21, and 24. What is the mean of the points scored? Blank 1: Question 3 (1 point) In Syracuse, high temperatures for six days were recorded at

9 0^{\circ}, 8 4^{\circ}, 8 4^{\circ}, 7 8^{\circ}, 7 3^{\circ}

, and

7 1^{\circ}

. What is the median temperature for these days? a

8 0^{\circ}

8 4^{\circ}

8 1^{\circ}

7 8^{\circ}

Question 4 (1 point)

Topic:

Probability Concepts

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Question 13

1 : 56Θ \cdot

■

\leftarrow

PSUnit 1 Test Questions

1 - 14

of 14 | Page 1 of 1 Question 1 ( 3 points) The distribution of the age at retirement for a random sample of 100 retirees from a large company is shown in the histogram below. Retirement Age What percent of these retirees retired before the age of 60 ? a

70%

14%

35%

7%

Topic:

Probability Concepts

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Question 14

2.01

\leftarrow

2.03

Quiz - Box Plots \& Quartiles Questions

1 - 10

of 10 | Page 1 of 1 Question 1 (1 point) The high temperatures for 50 cities are shown in the box-and-whisker plot. High Temperature for 50 Cities Describe the shape of the distribution. a Approximately symmetric b Skewed to the right c Skewed to the left d Uniform

Topic:

Probability Concepts

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Question 15

2:06 \& PS

2.04

Quiz - Outliers Questions

1 - 5

of 5 | Page 1 of 1 Question 1 (1 point) The number of earbohydrates in a one-ounce serving of thirteen breakfast cereals is listed as follows: 19, 26, 25, 24.

23, 26, 23, 21, 28, 23, 13, 25

and 20 units. Find the interquartile range (IQR). Blank 1: Question

2 (1

poirit) Researchers measured the

pH

of water collected from precipitation in an Ohio town.

pH

is a measure of acidity:

Topic:

Probability Concepts

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Question 16

← PS

2.03

Quiz - Box Plots \& Quartiles Questions 1-10 of 10 / Page 1 of 1 Question 1 (1 point) The high lemperatures for 50 cities are shown in the box-and-whisker plot. High Temperature for 50 Cities Describe the shape of the distribution. a Uniform b Approximately symmetric c Skewed to the left a Skewed to the right Question 2 (1 point) The boxplot shows the cost of 40 blenders. If you had \ 28$ how many of the blenders could you afford? a 25 b 40 c 10

Topic:

Probability Concepts

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Question 17

Question 5 (1 point) The box-and-whisker plot below represents students' scores on a recent English test. Student Scores What is the value of the upper quartile? a 94 b 84 c 68 d 76 Question 6 (1 point) The box-and-whisker plot below represents a set of grades in a college statistics class.

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Probability Concepts

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Question 18

\leftarrow: 11Θ \leftarrow PS 2.03 Quiz - Box Plots & Qu...

Question 7 (1 point) The box-and-whisker plot below represents the distribution of scores from a recent math test for Megan's class. Test Scores Megan's test score was in the top 25 percent of the class, but was not the highest score. Write a numerical score that could be Megan's score. Question 8 (1 point) Gabriella decides to start an exercise program. She obtains a table showing the amount of energy used during 20 minutes of 15 different activities. In the table, energy is measured in

Topic:

Probability Concepts

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Question 19

Compute the mean and standard deviation of the random variable with the given discrete probability distribution. Send data to Excel Part 1 of 2 Check

6 0^{\circ}

Topic:

Probability Concepts

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Question 20

HW:

9.1

Dasic Princlples of Hypothesis Testing- Question 9 of 9 (t point) / Question Attempt 1 of 3 Iype I error: A company that manu actures sted wires guarantees that the mean breaking strength (in kionewtons) of the wires is greater than SU. Ihey measure the strengths for a sample of wires and test

H_{0} : μ = 50

versus

H_{1} : μ > 50

. Part 1 of 3 If a Type i error is made. what conclusion will be drawn regarding the mean breaking strength? The conclusion will be that the mean breaking strength is greater than 50. Part:

1/3

Part 2 of 3 If a Type II error is made, what conclusion will be drawn regarding the mean breaking strength? The condusion will be that the mean breaking strength is (Choose one) 50.

\times

Savo For Later o2023 MeGow HaluC Al foris pesened Loms of the I pingy Ce 487 Clear

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Probability Concepts

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1 2 3 4

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