The general social survey described in exercise 5.8 included random samples from two groups: us residents with a college degree and us residents without a college degree. for the 505 sampled us residents with a college degree, the average number of hours worked each week was 41.8 hours with a standard deviation of 15.1 hours. for those 667 without a degree, the mean was 39.4 hours with a standard deviation of 15.1 hours. conduct a hypothesis test to check for a difference in the average number of hours worked for the two groups

with btw u said 100pts but it clearly says

i answerd and just got 10pts

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hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation:

answer: the resulting cross section is a rectangle. solution: a plane parallel to the base of a triangular prism will intersect a cross section that is the same shape as its bases. so the cross section is a triangle.

step-by-step explanation:

my apex says that it is false