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The Nature Of Statistics

The Nature Of Statistics - Statistics Questions asked by Filo students

Question 1

Simplify.

\frac{c s c x}{c o t x}

Use algebra and the fundamental trigonometric identities. Your answer should be a number or use a single trigonometric function.

Topic:

The Nature of Statistics

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Question 2

Score on last tyy:

0.5

of 1 pts. See Details for more. Next question You can retry this question below In the following probability distribution, the random variable

X

represents the number of activities a parent of a 6th-Bth grade student is involved in. Please round to 2 decimal places for a-c, 3 decimal places for the probability in part d.

Compute and the mean, $μ$ , of the random variable $X .259 \times$
Compute the variance, $σ^{2}$ , of the random variable $X, 1.45 \sim σ^{\circ}$
Compure the standard deviation, $σ$ , of the random variable $X, 1.20$
What is the probability that a randomly selected student has a parent involved in 1 activities?

Topic:

The Nature of Statistics

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Question 3

An cpenicn poll asks a randoen sample of adult whether they favor banning ownership of handguin by priate cinzens. A commentator believes that more than half of all adults favor such a ban. The null and ahenatrie hypotheses sou would wse to test this claim ate

$H_{w} : \overset{p}{^} = 00.5$
$H_{a} : \overset{p}{^} = 0.5, H_{,} : \overset{p}{^} \neq = 0.5$
$H_{4} : p = 0.5; H_{4} : p \neq = 0.5$
$H_{θ} : p = 0; H_{A} : p > 0$
None of the above

Topic:

The Nature of Statistics

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Question 4

Fractions Worksheet

\frac{5}{5} + \frac{7}{15} =

sin \frac{4}{5} - \frac{a}{8} =

\frac{8}{12} \div \frac{1}{2} =

2a. \frac{4}{10} - \frac{3}{4} =

\frac{1}{3} + \frac{5}{9} =

3a. \frac{7}{9} + \frac{3}{4} =

\frac{5}{2} + \frac{5}{12} =

4b. \frac{5}{12} + \frac{2}{3} =

Topic:

The Nature of Statistics

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Question 5

A survey on Internet usage was conducted among a group of 200 students in the school cafeteria. It was found that 100 students spend at least two hours online every day. Which of these is an example of descriptive statistics?

$50%$ of the students surveyed spend at least two hours online each day.
$50%$ of the students in a class spend at least two hours online each day.
$50%$ of the students in the cafeteria spend at least two hours online each day.
$50%$ of the students in the school spend at least two hours online each day.

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The Nature of Statistics

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Question 6

The following histogram represents quiz scores and uses the following interval bins:

1 - 5, 6

10, 11 - 15, 16 - 20, 21 - 25, 26 - 30, 31 - 35, 36 - 40, 41 - 45

, and

46 - 50

Grades on 40-Question Quiz
Grade on Quiz
Select the true statement for this histogram.
a.) The quiz score bin interval $11 - 15$ contains the most students, while bin interval $36 - 40$ contains the fewest.

Topic:

The Nature of Statistics

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Question 7

Consider a set of cards that has four cards labeled 1, 2, 3, and 4 . Suppose you pick two cards, without replacement, to obtain the mean of the two numbers that are drawn from the set. Which of the following tables shows the sampling distribution? a.)

Sample (n = 2) S_{1} = {1, 1} \overset{x}{ˉ} 1

Topic:

The Nature of Statistics

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Question 8

A college food court surveyed 325 students to see how many drink coffee and how many drink tea. The venn diagram below shows the results. (Each number gives the number of students who fall into that venn diagram category.) (a) How many of the students drink coffee? [fs students (b) How many of the students drink ne ither coffee nor tea? [students (c) How many of the students do not drink both coffee and tea?

□

students

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The Nature of Statistics

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Question 9

72660 said = 12259425%/ skip /1

my OpenMath Home | My Classes - | User Settings | Log Out Home > MATH 1530-A03 TR Spring 2023 > Assessment Homework - Chapter 3B Score:

12.17/18 7/9

answered Question 1 A jar contains 3 red marbles numbered 1 to 3 and 10 blue marbles numbered 1 to 10 . A marble is drawn at random from the jar. Find the probability that the marble is red or even-numbered. Question Help: DVideo I D Video 2 Qessage instructor Submit Question

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The Nature of Statistics

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Question 10

appropriate method. 3) Find the median age of 100 residents of a colony from the following data. 4) If the mean of the following frequency distribution is 50 , then find the value of '

k

'. 5) Find the mode of the following data 6) The distribution below gives the weights of 30 students of a class. Find the median weight of the students.

Topic:

The Nature of Statistics

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Question 11

A county is planning to expand its train service. In studying the current service, the county planner looked at which train stations are along or not along various train lines. The Venn diagram shows this information for three of the lines. (a) Select all the train lines that have a stop at Quilmes.

□

Green Line

□

Purple Line

□

Red Line (b) How many stations are only along the Green Line? (c) Which stations are only along one of the three lines (the Green Line, the Purple Line, or the Red Line)? Choose all that apply. Athens Bern Fes Graz Haifa Ilion Kent Lahti Nara Okene Quilmes Radom Santos Trento

□

Ulm

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The Nature of Statistics

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Question 12

Here is a Venn diagram showing the sets

B

and

D

, as well as the universal set

U

Find the sets below. Write each answer in roster form or as $\emptyset$ .
(a) $B \cap D =$
(b) $B^{'} =$
(c) $(B \cup D)^{'} =$

Topic:

The Nature of Statistics

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Question 13

Here is a Venn Diagram with sets

C, D

, and the universal set

U

. Shade

(C \cup D)^{'}

on the Venn diagram.

Topic:

The Nature of Statistics

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Question 14

The Venn diagram shows sets

A, B, C

, and the universal set

U

. Shade

B \cup A

' on the Venn diagram. Explanation Check

Topic:

The Nature of Statistics

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Question 15

Ali has two coupons for a chair. Coupon A: 10

re ba t eo na

83

chair Coupon B:

15%

off of a 83$ chair Choose the coupon that gives the lower price. Then fill in the blank with the correct value. Coupon A gives the lower price. The price with coupon

A

is \square

l ess t han t h e p r i ce w i t h co u p o n

B$. Coupon

B

gives the lower price. The price with coupon

B

is \\\\ \square

l ess t han t h e p r i ce w i t h co u p o n

A$.

Topic:

The Nature of Statistics

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Question 16

A university class has 29 students: 14 are psychology majors, 9 are history majors, and 6 are nursing majors. (Each student has only one of these majors.) The professor is planning to select two of the students for a demonstration. The first student will be selected at random, and then the second student will be selected at random from the remaining students. What is the probability that the first student selected is a psychology major and the second student is a nursing major? Do not round your intermediate computations. Round your final answer to three decimal places.

Topic:

The Nature of Statistics

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Question 17

Here is a table showing all 52 cards in a standard deck. How many five-card hands (drawn from a standard deck) contain exactly four tens? (A five-card hand is any set of five different cards.)

Topic:

The Nature of Statistics

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Question 18

Amy is going to pack snacks to share with her friends on a hike. She has 15 snacks to choose from: 8 are salty and 7 are sweet. She is going to choose 6 snacks. (a) In how many ways can Amy choose 6 snacks if the number of sweet snacks must be greater than or equal to 4 ? (b) In how many ways can Amy choose 6 snacks if the number of sweet snacks must be less than 4 ?

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The Nature of Statistics

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Question 19

α β + β γ + γ α = \frac{c}{a}

iii.

α β γ = - \frac{d}{a}

12. Polynomials of higher degree can be divided by polynomials of lower degree and Euclid's division rule can be verified. Very Short Answer Questions

If $p (x) = x^{2} - 5 x + 6$ , then find the values of $p (0), p (- 1)$ and $p (1)$ .
Write a quadratic polynomial whose zeroes are 2 and 3.
Write a quadratic polynomial whose sum and product of zeroes are $32$ and 4 respectively.
If one zero of the polynomial $x^{2} - 3 x + K$ is 2 , then find the volue of ' $K$ '.