Answer:
12
Step-by-step explanation:
Average age of 5 boys = 11 year
Sum of age of 5 boys = 11*5 = 55
Age of sixth boy = 17 years
Sum of age of 6 boys = 55 + 17 = 72
Average age of 6 boys= 72/6 = 12
The Answer To your Question is: 33/40
Complete Question:
Heights of 9-Year-Olds At age 9 the average weight (21.3 kg) and the average height (124.5 cm) for both boys and girls are exactly the same. A random sample of 9-year-olds yielded these results. Estimate the mean difference in height between boys and girls with 95% confidence. Does your interval support the given claim?
Boys Girls
Sample Size 60 50
Mean Height, cm 123.5 126.2
Population variance 98 120
a.State the hypotheses and identify the claim.
b.Find the critical value(s).
c.Compute the test value.
d.Make the decision.
e.Summarize the results.
Step-by-step explanation:
Find attachments for complete solution
Answer:
it's answer C
Step-by-step explanation:
hope this will help you
y-6x - 6=0
y = 6x + 6; slope = 6 and y intercept b = 6
Perpendicular lines, slope is opposite and reciprocal
so other line has slope = - 1/6, they both intersect in y a-xis so they intersect at (0,6) so other line also has b = 6
Equation of other line
y = -1/6 x + 6