he weights of5 squash (in pounds) are10,17,17.5,18.5,...

The weights of5 squash (in pounds) are10,17,17.5,18.5, and19.5

. The sample weights have a mean ofx=16.5

. The accepted population standard deviation for this type of squash is=1.25

a. What is the margin of error at the90% confidence level? Type as #.##

b. What is the margin of error at the99% confidence level? Type as: #.##

c. What is the90% confidence interval? Type as: [##.##, ##.##]

d. What is the99% confidence interval? Type as: [##.##, ##.##]

A tax assessor assesses the mean property tax bill for all property owners in a certain city. A recent survey obtained a sample mean of1400 dollars. The population standard deviation is known to be1000 dollars.

a. How many tax records should be obtained at a90% confidence level to have a margin error of100 dollars? Round up to the nearest whole number.

b. If the population standard deviation goes up to1500, would the margin of error be equal, greater than, or less than100? Type as: equal, greater than, or less than

The weights of pumpkins (in pounds) of6 pumpkins are5,7,7.5,8,8.5,and8.75. The sample weights have a mean ofx=7.458 and a standard deviation ofs=1.245

a. What is the degrees of freedom?

b. What is the critical value when the significance level is=0.1? Type as: #.###

c. What is the margin of error? Type as: #.###

d. What is the90% t-confidence interval for pumpkin weights? Type as: [#.### , #.###]