A company that produces muffins is concerned about the distribution of the amount of sodium in its mix. The company takes a simple random sample of 29 slices of bread and computes the sample mean to be 84 milligrams of sodium per serving.
Construct a 95% confidence interval BY HAND for the unknown mean sodium level assuming that the population standard deviation is 7.6 milligrams. Write a statement interpreting your confidence interval.

i dont understand

step-by-step explanation:

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true

for certain loans like mortgage loans, lenders scrutinize your debt to income ratio when you are applying for credit because it them evaluate your ability to repay your debts.

the answer is z7+8/5