Use the sample information z = 42,0 = 7, n= 16 to calculate the following confidence intervals for assuming the sample is from normal population
(a) 90 percent confidence. (Round your answers to 4 decimal places.)
The 90% confidence interval is from
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(b) 95 percent confidence. (Round your answers to 4 decimal places.)
The 95% confidence interval is from
to
(c) 99 percent confidence. (Round your answers to 4 decimal places.)
The 99% confidence interval is from
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Adeccribe how the intensals change as you increase the confidence level

Someone answer asap for ! a discount store’s prices are 25% lower than department store prices. the function c(x) = 0.75x can be used to determine the cost c, in dollars, of an item, where x is the department store price, in dollars. if the item has not sold in one month, the discount store takes an additional 20% off the discounted price and an additional $5 off the total purchase. the function d(y) = 0.80y - 5 can be used to find d, the cost, in dollars, of an item that has not been sold for a month, where y is the discount store price, in dollars. create a function d(c(x)) that represents the final price of an item when a costumer buys an item that has been in the discount store for a month. d(c(x)) =

As a salesperson you get $50/day and $3.60/each sales you make.if you want to make $60 in one day, how many sales would you need need to make ? a 3b 4c 5d 6 show work.

An airplane is flying at an elevation of 5150 ft, directly above a straight highway. two motorists are driving cars on the highway on opposite sides of the plane, and the angle of depression to one car is 35 ̊ and to the other is 52 ̊. how far apart are the cars?