Different groups of 50 graduates of an engineering school were asked the
starting annual salary for their first engineering job after graduation, and the
sampling variability was low. If the average salary of one of the groups was
$65,000, which of these is least likely to be the average salary of another of
the groups?

they are simplified

step-by-step explanation:

.19875994384

step-by-step explanation:

1699/ 8548

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.

click to let others know, how is it

0.0

0 votes

1

report

read more on -

step-by-step explanation: