Questions from Business Statistics

Q: The mean cost to repair the smoke and fire damage that results

The mean cost to repair the smoke and fire damage that results from home fires of all causes is $11,389 (HomeAdvisor). How does the damage that results from home fires caused by careless use of tobacc...

Q: Costs are rising for all kinds of medical care. The mean

Costs are rising for all kinds of medical care. The mean monthly rent at assisted-living facilities was reported to have increased 17% over the last five years to $3486. Assume this cost estimate is b...

Q: For a t distribution with 16 degrees of freedom, find the

For a t distribution with 16 degrees of freedom, find the area, or probability, in each region. a. To the right of 2.120 b. To the left of 1.337 c. To the left of −1.746 d. To the right of 2.583 e. Be...

Q: Annual expenditure for prescription drugs was $838 per person in the

Annual expenditure for prescription drugs was $838 per person in the Northeast of the country. A sample of 60 individuals in the Midwest showed a per person annual expenditure for prescription drugs o...

Q: Fowle Marketing Research, Inc., bases charges to a client on

Fowle Marketing Research, Inc., bases charges to a client on the assumption that telephone surveys can be completed in a mean time of 15 minutes or less. If a longer mean survey time is necessary, a p...

Q: CCN and ActMedia provided a television channel targeted to individuals waiting in

CCN and ActMedia provided a television channel targeted to individuals waiting in supermarket checkout lines. The channel showed news, short features, and advertisements. The length of the program was...

Q: Consider the following hypothesis test: H0: µ ≤ 12

Consider the following hypothesis test: H0: µ ≤ 12 Ha: µ > 12 A sample of 25 provided a sample mean x = 14 and a sample standard deviation σ = 4.32. a. Compute the value of the test statistic. b. Use...

Q: Consider the following hypothesis test: H0: µ = 18

Consider the following hypothesis test: H0: µ = 18 Ha: µ ≠ 18 A sample of 48 provided a sample mean x = 17 and a sample standard deviation σ = 4.5. a. Compute the value of the test statistic. b. Use t...

Q: Older people often have a hard time finding work. AARP reported

Older people often have a hard time finding work. AARP reported on the number of weeks it takes a worker aged 55 plus to find a job. The data on number of weeks spent searching for a job contained in...

Q: Consider the following hypothesis test: H0: µ ≥ 45

Consider the following hypothesis test: H0: µ ≥ 45 Ha: µ < 45 A sample of 36 is used. Identify the p-value and state your conclusion for each of the following sample results. Use α = .01. a. x̅ = 44 a...