So the answer is 4 I’m right u wrong ok I’m tell the truth trust me I got 5 hearts this morning
Answer:
And if we use the normal standard distribution or excel we got:
Step-by-step explanation:
For this case we have the following info given:
represent the mean
represent the standard deviation
represent the sample size
The distribution for the sample size if we use the central limit theorem (n>30) is given by:
And for this case we want to find the following probability:
And for this case we can use the z score formula given by:
And replacing we got:
And if we use the normal standard distribution or excel we got:
Answer:
a. 3
b. 12
c. In. and "
d. ft. and '
Step-by-step explanation:
c. 13in. or 13"
d. 13ft. or 13'
Answer:
0.89
Step-by-step explanation:
Answer:
8(15-m)
Step-by-step explanation:
By looking at the options, we can understand that the right one is 8(15-m), since we need to multiply the time by the number of question.
Also, we can check that result by arranging an equations usint the total time.
55 = 3m - 8(15-m)
55 = 3m - 120 + 8m
55 = 11m - 120
55 + 120 = 11m
175 = 11m
m = 175/11 = 15.91
55 = 3*15.91 - 8(15-15.91) = 47.73 - 120 + 127.28 = 55.01 ≈ 55
