Statistics and Probability Answers

 On average, a textbook author makes two wordprocessing errors per page on the first draft of her textbook. What is the probability that on the next page

she will make

(a) 4 or more errors?

(b) no errors?

You pick a card from a deck. If it is a face card, you will win 500. If you get an ace, you will win 1000. If the card you picked is red you get 100. For any other card, you will win nothing. Find the expected value that you can possibly win

The mean serum level measured in 12 patients twenty-four hours after they received a newly recommended antibiotic was 1.2 mg/dl with a standard deviation of 0.4 mg/dl. If the mean serum level in the general population is 1.0 mg/dl, test whether or not the mean serum level in the sample group is significantly different from that of the general population. Use a = 5%. Compute the test value.

If the population size is equal to 5 and the sample size is equal to 3. How many possible sample can be drawn using the formula of without replacement?

If the population size is equal to 3 and the sample size is equal to 5. How many possible samples can be drawn using the formula of with replacement?

A group of students got the following scores in an achievement test:9,12,15,18,21 and 24 . consider the sample of size 3 that can be drawn from this population. Construct a sampling distribution of the resulting means and find the probability

​A group of students got the following scores in an achievement test: 9,12,15,18, 21, and 24. Consider samples of size 3 that can be drawn from this population.

B.Construct a sampling distribution of the resulting sample means

SAMPLE MEANS FREQUENCY

PROBABILITY

Consider a population consisting of 1, 2, and 3. Suppose samples of size 3 are drawn from this population with and without replacement.

1. Determine the number of sets of all possible samples.

2. List all the possible samples, and compute the mean of each sample.

3. Construct the sampling distribution of the sample means

The mean serum-creatinine level measured in 10 patients 24 hours after they received a

newly proposed antibiotic was 1.2 mg/dL with standard deviation of 0.4mg/dL. If the serum level in the general population is 1.0mg, test the hypothesis that the serum level in this group is different from that of the general population. Use significant significant level of 0.05