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Author Question: Homeowners who recently bought their houses from a local developer allege that 30% of the houses ... (Read 116 times)

kaitlynndavis

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on: Feb 26, 2023

Question 1

Heights of children entering kindergarten are normally distributed with a mean of 103 cm and a standard deviation of 1.27 cm. What is the probability that a random sample of 8 children will have an average height more than 103.5 cm?

◦

0.8665


◦

0.6517


◦

0.3483


◦

0.1335



Question 2

Homeowners who recently bought their houses from a local developer allege that 30% of the houses this developer constructs have some major defect that will require substantial repairs. To test this allegation, we randomly sample 20 houses constructed by the developer and find that two of the homes do, indeed, have some major defect. If the allegation is correct, what is the probability of observing at most two defective homes out of a random sample of 20?

◦

0.0256


◦

0.1000


◦

0.0300


◦

0.9744

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Marked as best answer by kaitlynndavis on Feb 26, 2023

ekattan2

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Reply #1 on: Feb 26, 2023
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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kaitlynndavis

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Reply 2 on: Feb 26, 2023
YES! Correct, THANKS for helping me on my review

parshano

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Reply 3 on: Yesterday
Gracias!

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