A z-score of 1.28 corresponds to approximately what percentile of the standard normal ...

Author Question: A z-score of 1.28 corresponds to approximately what percentile of the standard normal ... (Read 60 times)

Bernana

Hero Member
Posts: 530

on: Jul 24, 2018

A z-score of 1.28 corresponds to approximately what percentile of the standard normal distribution?

Question 2

Suppose that A and B are mutually exclusive events, and that P(A) = 0.4 and P(B) = 0.3 . Then, P(A and B) will be
a. 0.0
b. 0.4
c. 0.3
d. 0.7

katheyjon

Sr. Member
Posts: 331

Reply #1 on: Jul 24, 2018

Answer to Question 1

90th percentile

Answer to Question 2

A

Need homework help now?

Ask unlimited questions for free

Ask a Question

« previous next »

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.