Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Determine whether the given value is a statistic or a parameter. 1. A researcher examines the records of all the registered voters in one city

Determine whether the given value is a statistic or a parameter.

1. A researcher examines the records of all the registered voters in one city and finds that 61% are registered Republicans.

A) Parameter

B) Statistic

C) Population

D) Variable

Find the indicated percentile.

2). The weights (in pounds) of 30 newborn babies are listed below. Find 46th percentile.

5.5 5.7 5.8 5.9 6.1 6.1 6.4 6.4 6.5 6.6

6.7 6.7 6.7 6.9 7.0 7.0 7.0. 7.1 7.2 7.2

7.4 7.5 7.7 7.7 7.8 8.0 8.1 8.1. 8.3 8.7

A) 13.8

B) 6.9

C) 6.4

D) 6.6

Find the median for the given sample data.

3). 1.6 2.6 3.0 1.1 1.3 3.7 1.9 3.5 2.3 2.8 1.9

A) 2.40

B) 2.30

C) 2.3

D) 1.9

Calculate sample variance.

4). Calculate sample variance of SAT test results with following scores: 1240, 1462, 982, 790, 1148, 1296. Round your answer to the nearest integer.

A) 56907

B) 239

C) 47422

D) 218

Find the standard deviation.

5). Find standard deviation for sample of test scores from a Biology class with following data: 78, 64, 82, 91, 68, 71, 86, 60. State your answer to one decimal places.

A) 105.8

B) 11.0

C) 10.3

D) 120.9

Find z-score.

6). Scores a history test have average of 80 with standard deviation of 6. What is the z-score for a student who earned a 75 on the test? State your. answer to two decimal place.

A) -1.83

B) 1.83

C) 0.83

D) -0.83

Find the area under the standard normal curve.

7). Find the area under the standard normal curve to the right of z=0.94. State your answer to four decimal places.

A) -0.1736

B) 0.1736

C) -0.8264

D) 0.8264

Find the indicated probability.

8). If you pick a card at random from a well shuffled deck, what is the probability that you get a hearts or a 5?

A) 17/52

B) 9/26

C) 4/13

D) 11/26

9) The table below describes the smoking habits of a group of asthma sufferers.

Nonsmoker Occasional smoker Regular smoker Heavy smoker Total
Men 328 45 64 33 470
Women 401 35 61 34 531
Total 729 80 125 67 1001

If one of the 1001 people is randomly selected, find the probability that the person is a man or a heavy smoker.

A) 0.471

B) 0.536

C) 0.503

D) 0.493

10). A manufacturing process has a 70% yield, meaning that 70% of the products are acceptable and 30% are defective. If three of the products are randomly selected, find the probability that all of them are acceptable.

A) 0.429

B) 0.343

C) 2.1

D) 0.027

Determine whether the given procedure results in a binomial distribution. If not, state the reason, why.

11). Rolling a single die 63 times, keeping track of the "fives" rolled.

A) Not binomial: there are too many trials.

B) Not binomial: there are more than two outcomes for each trial.

C) Procedure results in a binomial distribution.

D) Not binomial: the trials are not independent.

Find the indicated probability.

12). An IRS auditor randomly selects 3 tax returns from 42 returns of which 14 contain errors. What is the probability that she selects none of those containing errors?

A) 0.2854

B) 0.2963

C) 0.0317

D) 0.037

13). What is the probability that 6 rolls of a fair die will show exactly two fours?

A) 0.0294

B) 0.0331

C) 0.0186

D) 0.0335

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Recent Developments Of Mathematical Fluid Mechanics

Authors: Herbert Amann, Yoshikazu Giga, Hideo Kozono, Hisashi Okamoto, Masao Yamazaki

1st Edition

3034809395, 9783034809399

More Books

Students also viewed these Mathematics questions

Question

Can consultants replace outsourced activities? Why or why not?

Answered: 1 week ago