Question

One of your distributors reports an average of 150 sales per day. You suspect that this average is not accurate, so you randomly select 35 days and determine the number of sales each day. The sample mean is 143 daily sales with a standard deviation of 15 sales. At ?=0.10 is there enough evidence to doubt the distributor’s reported average? a. Identify the claim. Then state the null and alternative hypotheses. b. Identify the level of significance. c. Find the standardized test statistic z. d. Find the P-value. e. Decide whether to reject the null hypothesis. f. Interpret the decision in the context of the original claim.

          One of your distributors reports an average of 150 sales per day. You suspect that this average is not accurate, so you randomly select 35 days and determine the number of sales each day. The sample mean is 143 daily sales with a standard deviation of 15 sales. At ?=0.10 is there enough evidence to doubt the distributor’s reported average?
a. Identify the claim. Then state the null and alternative hypotheses.
b. Identify the level of significance.
c. Find the standardized test statistic z.
d. Find the P-value.
e. Decide whether to reject the null hypothesis.
f. Interpret the decision in the context of the original claim.

Show more…

One of your distributors reports an average of 150 sales per day. You suspect that this average is not accurate, so you randomly select 35 days and determine the number of sales each day. The sample mean is 143 daily sales with a standard deviation of 15 sales. At ?=0.10 is there enough evidence to doubt the distributor’s reported average?
a. Identify the claim. Then state the null and alternative hypotheses.
b. Identify the level of significance.
c. Find the standardized test statistic z.
d. Find the P-value.
e. Decide whether to reject the null hypothesis.
f. Interpret the decision in the context of the original claim.

Added by Raul W.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Kari Hasz

05/10/2022

Step 1

- **Claim**: The distributor reports an average of 150 sales per day. - **Null Hypothesis (\(H_0\))**: \(\mu = 150\) (The average sales per day is 150.) - **Alternative Hypothesis (\(H_a\))**: \(\mu \neq 150\) (The average sales per day is not 150.) Show more…

Show all steps

lock

Thanks for your feedback!

One of your distributors reports an average of 150 sales per day. You suspect that this average is not accurate, so you randomly select 35 days and determine the number of sales each day. The sample mean is 143 daily sales with a standard deviation of 15 sales. At α=0.10 is there enough evidence to doubt the distributor’s reported average? a. Identify the claim. Then state the null and alternative hypotheses. b. Identify the level of significance. c. Find the standardized test statistic z. d. Find the P-value. e. Decide whether to reject the null hypothesis. f. Interpret the decision in the context of the original claim.

Play audio

Feedback

Powered by NumerAI

Kari Hasz and 62 other subject Intro Stats / AP Statistics educators are ready to help you.

Ask a new question

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Recommended Videos

Recommended Textbooks

Transcript

Ace is your personal tutor. It breaks down any question with clear steps so you can learn.

Start Using Ace

Continue solving this problem

Create a free account to:

View full step-by-step solution
Ask follow-up questions with Ace AI
Save progress and study later