Question

1.

Answer 1

Answer:

Step-by-step explanation:

1) From standard distribution table we find that

P(Z<1.45) = 0.5+0.4265

=0.9265 Option d

2) Given that X, The scores on a standardized test is N(500,60)

percent of students who scored below Jake

$=100*P(X$

3) X, lengths of new born girls is N(49.2, 1.8)

n = 2000

P(X<51) = P(Z<1) =0.84

No of girls =2000(0.84) =1683

4) P(Z<2.72) is the answer

5)X, ages of cars driven is N(8,3.2)

75% correspond to z=0.675

X = 8+0.675(3.2) =10.16=10.2

Answer 2

Answer:

1.) 0.9265

2.) 63%

3.) 1683

4.) 5.9

I hope this helped and give me brainiest please