STAT 102 Quiz 1

STAT 102 Quiz 1

1st Grade

18 Qs

quiz-placeholder

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STAT 102 Quiz 1

STAT 102 Quiz 1

Assessment

Quiz

Other

1st Grade

Practice Problem

Hard

Created by

Zehra Sena Kibar

Used 2+ times

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18 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The Central Limit Theorem is important in statistics because:

for any size sample, it says the sampling distribution of the sample mean is approximately normal

for any population, it says the sampling distribution of the sample mean is approximately normal,

regardless of the sample size

for a large n, it says the population is approximately normal

for a large n, it says the sampling distribution of the sample mean is approximately normal, regardless of

the population

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following statements about the sampling distribution of the sample mean is incorrect?

The sampling distribution is generated by repeatedly taking samples of size n and computing the sample

means.

The standard deviation of the sampling distribution is σ.

The sampling distribution is approximately normal whenever the sample size is sufficiently large (n ≧ 30).

D) The mean of the sampling distribution is μ.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

As the sample size gets larger, the standard error of the sampling distribution of the sample mean gets larger as well.

TRUE

FALSE

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The Central Limit Theorem guarantees that the population is normal whenever n is sufficiently large.

TRUE

FALSE

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A study was conducted to determine what proportion of all college students considered themselves as full-time students. A random sample of 300 college students was selected and 210 of the students responded that they considered themselves full-time students. Which of the following would represent the target parameter of interest?

μ

p

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

233%

67%

98%

78%

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

A 90% confidence interval for the mean percentage of airline reservations being canceled on the day of the flight is (1.1%, 3.2%). What is the point estimator of the mean percentage of reservations that are canceled on the day of the flight?

1.05%

2.15%

2.1%

1.60%

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