Exam 3 Warm Up

Exam 3 Warm Up

University

8 Qs

quiz-placeholder

Similar activities

Bài tập NLKT

Bài tập NLKT

University

10 Qs

SI Reservas

SI Reservas

University

10 Qs

Numerical Analysis 1

Numerical Analysis 1

University

10 Qs

Didáctica de las Matemáticas

Didáctica de las Matemáticas

University

12 Qs

Nhân chia số hữu tỉ

Nhân chia số hữu tỉ

7th Grade - University

10 Qs

Review for Quiz Unit 2 #1

Review for Quiz Unit 2 #1

7th Grade - University

10 Qs

Quiz 2 First Order DE

Quiz 2 First Order DE

University

10 Qs

NATIONAL MATHEMATICS DAY

NATIONAL MATHEMATICS DAY

5th Grade - Professional Development

10 Qs

Exam 3 Warm Up

Exam 3 Warm Up

Assessment

Quiz

Mathematics

University

Practice Problem

Medium

Created by

Joseph Lopez

Used 5+ times

FREE Resource

AI

Enhance your content in a minute

Add similar questions
Adjust reading levels
Convert to real-world scenario
Translate activity
More...

8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

A simple random sample of size 20 is obtained from a population that is skewed left with a mean of 44 and a standard deviation of 3. A normal distribution can be used to approximate the sampling distribution.

True

False

2.

FILL IN THE BLANK QUESTION

45 sec • 1 pt

Suppose that a study of elementary school students reports that the mean age at which children begin reading is 5.5 years with a standard deviation of 1.0 years. If a sampling distribution is created using samples of the ages at which 46 children begin reading, what would be the mean of the sampling distribution of sample means? Round to two decimal places, if necessary.

3.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Suppose that a study of elementary school students reports that the mean age at which children begin reading is 5.5 years with a standard deviation of 1.0 years. If a sampling distribution is created using samples of the ages at which 46 children begin reading, what would be the standard deviation of the sampling distribution of sample means? Round to two decimal places, if necessary.

4.

FILL IN THE BLANK QUESTION

1 min • 1 pt

As part of a fuel efficiency study, a large school district wishes to estimate the average weekly mileage for its school buses. A sample of 28 buses is selected at random and the mileages are recorded for that week. The sample mean was found to be 210 miles with a standard deviation of 28 miles. Assume that the population distribution is approximately normal. Find the critical value that should be used in constructing a 95% confidence interval. Round your answer to three decimal places.

5.

FILL IN THE BLANK QUESTION

1 min • 1 pt

The American Heart Association is about to conduct an anti-smoking 23 campaign and wants to know the fraction of Americans over  who smoke. Suppose a sample of 3145 Americans over 23 is drawn.  Of these people, 789 smoke.  Using the data, estimate the proportion of Americans over  who smoke.  Enter your answer as a fraction or a decimal number rounded to three decimal places.

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

A simple random sample of size 28 is obtained from a population that is normally distributed with a mean of 68 and a standard deviation of 5. A normal distribution can be used to approximate the sampling distribution of sample means.

True

False

7.

FILL IN THE BLANK QUESTION

1 min • 1 pt

A simple random sample of 34 Oxford commuters found that the mean distance commuters drove to work each day was estimated to be 44.9 miles with a standard deviation of 4.4 miles. Find the critical value that should be used in constructing a 90% confidence interval. Round your answer to three decimal places.

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Google

Continue with Google

Email

Continue with Email

Classlink

Continue with Classlink

Clever

Continue with Clever

or continue with

Microsoft

Microsoft

Apple

Apple

Others

Others

Already have an account?