A random sample of 15 hourly fees for car washers (including tips) was drawn from a normal population. The sample mean and sample standard deviation were = $14.9 and s = $6.75.

Can we infer at the 5% significance level that the mean fee for car washers (including tips) is greater than $12.5?

Can we infer at the 5% significance level that the population mean is greater than $12.5, assuming that you know the population standard deviation is equal to 6.75?

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1

45

step-by-step explanation:

answer: your gay

step-by-step explanation:

you dont know math