David is a statistician. He has a sample size of 40 (which he cannot change). What element of his hypothesis test can he adjust to minimize the probability that he incorrectly rejects the null hypothesis? the mean of the population

the mean of the sample

the standard deviation of the population

the significance level of the test

the answer to question 1 is -8, 28.

step-by-step explanation:

the value of x is 28.2

answer: $53750

steps:

list the principal and interest after the n-th year:

n       principal   simple interest

1     12500     375

2     25000     750

3     37500     1125

4     50000     1500

sum: $50000     $3750

total at end of year 4: $53750

1/3

step-by-step explanation:

2/4 x 9/9 = 18/36

1/3 x 12/12 = 12/36 - smallest fraction

3/6 x 6/6 = 18/36

7/9 x 4/4 = 28/36