Potatoes - Samples: Suppose the weights of Farmer Carl's potatoes are normally distributed with a mean of 8.0 ounces and a standard deviation of 1.3 ounces.

Suppose Carl bags his potatoes in randomly selected groups of 6. What percentage of these bags should have a mean potato weight between 7.5 and 8.5 ounces? Enter your answer as a percentage rounded to one decimal place.
%

The speeds of car traveling on Interstate Highway I-35 are normally distributed with a mean of 74
miles per hour and a standard deviation of 6 miles per hour.
(a) Find the percentage of the cars traveling on this highway with a speed
i. of more than 85,
ii. between 65 to 72.
(b) If a BMW is at the speed that is faster than 90 percentage of cars, what is the speed of the
BMW?

Find the margin of error and 95% confidence interval for the following surveys. Round all answers to 2 decimal places.

a) A survey of 500 people finds that 45% plan to vote for Smith for governor. Margin of Error (as a percentage): Confidence Interval: % to %

b) A survey of 1500 people finds that 61% support stricter penalties for child abuse.

Margin of Error (as a percentage):

Confidence Interval: % to % License

The ages of commercial aircraft are normally distributed with a mean of 13.013.0 years and a standard deviation of 8.11428.1142 years. What percentage of individual aircraft have ages between 1010 years and 1616 ​years? Assume that a random sample of 8181 aircraft is selected and the mean age of the sample is computed. What percentage of sample means have ages between 1010 years and 1616 ​years?

1). A solution contains 0.0490 M Ca²⁺ and 0.0980 M Ag⁺. If solid Na₃PO₄ is added to this mixture, which of the phosphate species would precipitate out of solution first? (which one?)

(a). Ca₃(PO₄)₂

(b). Ag₃PO₄

(c). Na₃PO₄

_2). When the second cation just starts to precipitate, what percentage of the first cation remains in solution?

percentage = ?%

Consider the following​ bonds:

What is the percentage change in the price of each bond if its yield to maturity falls from

6.8 %6.8%

to

5.8 %5.8%​?

The percentage change in the price of bond A is

nothing​%.

​(Round to one decimal​ place.)

The ages of commercial aircraft are normally distributed with a mean of 13.5 years and a standard deviation of 8.2933 years. What percentage of individual aircraft have ages between 10 years and 16 ​years? Assume that a random sample of 81 aircraft is selected and the mean age of the sample is computed. What percentage of sample means have ages between 10 years and 16 years?

suppose you took out a fully amortized $30,000 automobile loan to finance your purchase over 48 months at an APR of 3.5%. So far, you have made two years of payments in a timely fashion so the next payment will be your 25th. what percentage of the next payment will be allocated toward reducing the outstanding balance on the loan and what percentage will be interest?