a) \(\displaystyle\mu_{{{11}}}-\mu_{{{12}}}\in{\left({0.97},{5.65}\right)}\)

\(\mu_{11}-\mu_{13}\in (-3.40,1.28) \mu_{11}-\mu_{13}\in (-6.67,-2.03)\)

c) 50

asked 2021-06-21

Source, df, SS, MS, F

A, 2, 5.3

B, 3, 9.1

AB, 6,

Error, 12, 24.5

Total, 23, 43.7

a. Fill in the missing items in the table.

b. Do the data provide sufficient evidence to indicate that factors A and B interact? Test using \(\alpha \alpha=.05\). What are the practical implications of your answer?

c. Do the data provide sufficient evidence to indicate that factors A and B affect the response variable x? Explain.

asked 2020-10-26

Find the probability that a sample of size \(\displaystyle{n}={42}\) is randomly selected with a mean between 221.6 and 229.1.

\(\displaystyle{P}{\left({221.6}{<}\overline{{{X}}}{<}{229.1}\right)}=\)?

Write your answers as numbers accurate to 4 decimal places.

asked 2021-02-21

Find the probability that a single randomly selected value is between 221.6 and 229.1.

\(\displaystyle{P}{\left({221.6}{<}{X}{<}{229.1}\right)}=\)?

Write your answers as numbers accurate to 4 decimal places.

asked 2020-10-28

Find the probability that a single randomly selected value is less than 226.9.

\(\displaystyle{P}{\left({X}{<}{226.9}\right)}=\)?

Write your answers as numbers accurate to 4 decimal places.

asked 2021-01-04

Find the probability that a sample of size \(\displaystyle{n}={147}\) is randomly selected with a mean between 184 and 205.1.

\(\displaystyle{P}{\left({184}{<}{M}{<}{205.1}\right)}=\)?

Write your answers as numbers accurate to 4 decimal places.

asked 2021-09-04

David drives to school in rush hour traffic and averages 32 mph. He returns home in mid-afternoon when there is less traffic and averages 48 mph. What is the distance between his home and school if the total traveling time is 1 hr 15 min?

asked 2021-08-08

From a simple random sample of 14 shoppers surveyed, the sample mean of money spent for holiday gifts was 145 dollars with a sample standard deviation of 11 dollars. We wish to construct a \(\displaystyle{99}\%\) confidence interval for the population mean of money spent for holiday gifts.

Read carefully the text and provide each of the following:

The sample size \(\displaystyle?=\),

the sample mean \(\displaystyle?\equiv\),

the sample standard deviation \(\displaystyle?=\), NKS the confidence level \(\displaystyle{C}{L}=\%\).

Read carefully the text and provide each of the following:

The sample size \(\displaystyle?=\),

the sample mean \(\displaystyle?\equiv\),

the sample standard deviation \(\displaystyle?=\), NKS the confidence level \(\displaystyle{C}{L}=\%\).