844 Answered Questions for the topic Statistics Question

04/01/18

A computer manufacturer uses graphic cards made by two companies N and I. They are using the cards made by N in 80% of the computers and made by I on 20% of the computers. They have found that 2%... more

03/29/18

#### Find the value of the test statistic

I would really appreciate the help guys. Thanks again !   1)the claim is that the proportion of peas with yellow pods is equal to 0.25 the sample statistics from one experiment include 560 peas... more

03/28/18

Two cards are drawn without replacement from a standard deck of 52 playing cards. What is the probability of choosing a queen for the second card drawn, if the first card, drawn without... more

03/25/18

#### an urn holds 4 pink marbles, 6 white marbles, and 5 purple marbles.

a) If you pick a marble at random, what is the probability that it is white?

03/21/18

03/09/18

#### There are 136 passengers on a plane. 78 of them are women. 21 of them are men who purchased non-refundable tickets.

There are 136 passengers on a plane. 78 of them are women. 21 of them are men who purchased non-refundable tickets. 1) If you put the names of all the passengers in hat and then drew two names... more

03/08/18

#### The weight of a sperm whale’s brain is normally distributed with a mean of 15.5 pounds and a standard deviation of 3.6 pounds.

The weight of a sperm whale’s brain is normally distributed with a mean of 15.5 pounds and a standard deviation of 3.6 pounds. What is the probability a randomly selected sperm whale will have a... more

03/07/18

A recent estimate of Congress’ approval rating was 17%. What sample size does this estimate suggest we should use for a margin of error of 0.04 with 95% confidence?

02/28/18

#### When Joe plays a board game with his four sisters, any one of the five players is equally likely to win.

They decide to play the game repeatedly until Joe wins a game, and then they will stop. Assuming that the outcomes are independent, what is the probability that they play at least three games?

02/23/18

#### what is the area under the standard normal curve between z=−2.9 and z=0.28?

I need to know the area under the standard normal curve

02/20/18

is this a statistics question?

02/20/18

#### How many 3-digit number with no repeated digits using 4, 5, 6, 7, 8 can be a) less than 520; b) greater than 600; greater than 5000?

Solve the following problems. Write the formula, give, solution and final answer.

02/18/18

You measure 37 textbooks' weights, and find they have a mean weight of 64 ounces. Assume the population standard deviation is 5.8 ounces. Based on this, construct a 90% confidence interval for the... more

02/18/18

#### read the description . I need work and an explanation

Tom and Jan are planning on applying to attend KSU. Tom takes the ACT while Jan decides to take the SAT. The mean score on the ACT is a 17 with a standard deviation of 5, and the SAT mean score is... more

02/18/18

#### How many different ways can the officers be appointed?

A corporation must appoint a president, cheif exectuive officer (CEO), cheif operating officer (COO), and cheif financial officer (CFO). It must also appoint a planning committee with five... more

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