Determine P(-2.45 z 1.69), assuming a standard normal ...

Author Question: Determine P(-2.45 z 1.69), assuming a standard normal ... (Read 66 times)

jenna1

Hero Member
Posts: 568

on: Jun 24, 2018

Determine P(-2.45 z 1.69), assuming a standard normal distribution.

Question 2

The amount of time spent by American adults playing sports per day is normally distributed with a mean of 4 hours and standard deviation of 1.25 hours. Find the probability that if four American adults are randomly selected, their average number of hours spent playing sports is more than 5 hours per day.

jointhecircus

Sr. Member
Posts: 343

Reply #1 on: Jun 24, 2018

Answer to Question 1

0.9474

Answer to Question 2

0.0548

Need homework help now?

Ask unlimited questions for free

Ask a Question

« previous next »

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

Did you know?

More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.