Acell phone service provider has selected a random sample of 20 of its customers in an effort to estimate the mean number of minutes used per day. the results of the sample included a sample mean of 34.5 minutes and a sample standard deviation equal to 11.5 minutes. based on this information, and using a 95 percent confidence level:

histogram or dot plot?

step-by-step explanation:

b

step-by-step explanation:

the total is 23.97. 0.25% is off so you have to subtracting 25% from 100% and you will get 75% if you convert it to decimal you will get 0.75. you have to find the original because the formula is % times original = total.so you have the total and the % so you just have to plug it in.