25:::On average, a help desk receives 11 emails in one hour. The emails follow a Poisson distribution. Determine the mean and standard deviation in 2 hours.

=

=

26::On average, the drive-up window at Dann's Doughnuts serves 14 customers between 3:00pm and 4:00pm.

a) What is the probability of exactly 16 drive-up customers between 3:00pm and 4:00pm?

b) What is the probability of fewer than 16 drive-up customers between 3:00pm and 4:00pm?

c) What is the probability of at least 16 drive-up customers between 3:00pm and 4:00pm

35:::Given confidence interval, (51.55, 59.25), determine the point estimate and the margin of error.

Point Estimate =

Margin of Error =

36:::Create 99% confidence interval for the data set below.

35 35 42 38 36 40 37

( ) , ( )

37:::::The community pool is less than 90% full.

Determine if the hypothesis claim above is the Null Hypothesis or the Alternative Hypothesis.

• Alternative
• Null

38:::Claim: More than 75% of the vote is in favor of the ballot issue.

A random sample showed that 51 out of 60 voters were in favor of the issue. Use the traditional method at the 12% significance level to test the claim.

Critical Value =

Test Statistic =

conclusion

39:::Claim: A Frosted Fruits cereal box contains less than 16 ounces of cereal.

A random sample of 52 revealed a mean of 15.65 ounces. Use the traditional method at a 2% significance level to test the claim assuming a known population standard deviation of 1.6.

Critical Value =

Test Statistic =

conclsion

40:::Claim: The average career length for an NFL quarter back is 4.5 years.

A random sample of 14 revealed a mean of 4.7 years and a sample standard deviation of 0.45. Use the traditional method at a 5% significance level to test the claim.

Critical Value =

Test Statistic =

conclusion=