Question

1. Suppose X approximates a binomial distribution with n = 10, p = .35 . Compute...

1. Suppose X approximates a binomial distribution with n = 10, p = .35 . Compute Pr ( X = 4 ).

The population of students that took the last statistics quiz had a mean score of 17 and a standard deviation of 2. Assume a normal distribution. What is the Z score of 17?


Group of answer choices

2


Cannot be determined

1

0

Group of answer choices

0.1285


0.4000

0.2377

0.2901

The population of students that took the last statistics quiz had a mean score of 17 and a standard deviation of 2. Assume a normal distribution. A Z score of -2.0 and below will be an F. What is that raw score?


Group of answer choices

Less than 8


More than 14

Less than 14

Less than 11

X has a normal distribution with a mean of 5 and a standard deviation of 1.2. What is the probability associated with an outcome between 5 and 7.4?


Group of answer choices

50%


97.72%

None of these are correct

47.72%

For a standard normal variable Z: Pr(z > 2.04) = ?


Group of answer choices

0.0212


0.9483

0.9793

0.0207


The population of students that took the last statistics quiz had a mean score of 17 and a standard deviation of 2. Assume a normal distribution. What is the Z score of 17?


Group of answer choices

2


Cannot be determined

1

0







The population of students that took the last statistics quiz had a mean score of 17 and a standard deviation of 2. Assume a normal distribution. What is the Z score of 17?


Group of answer choices

2


Cannot be determined

1

0

Homework Answers

Answer #1

Dear student, you did not mention any question number. So I am using # symbol.

Last 2 questions are repeated. I marked it (2).

All questions are answered below.

All questions are in order.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Suppose X has a normal distribution with mean 3 and standard deviation 1. The 95th percentile...
Suppose X has a normal distribution with mean 3 and standard deviation 1. The 95th percentile of this distribution is Group of answer choices 4.28 -4.28 4.94 -4.64 4.64 2. Suppose X = 5 is a measurement from a normal population with mean 2 and standard deviation 3. The corresponding Z-score is Group of answer choices 2 5 0 1 3 3. Suppose X is a standard normal random variable. Among other things this implies that the mean of X...
1. The Central Limit Theorem for the proportion requires np >= 10 and n(1-p) >= 10,...
1. The Central Limit Theorem for the proportion requires np >= 10 and n(1-p) >= 10, and that the sample was collected using an SRS. If these requirements are met, then the distribution of the sample proportion is approximately normal. If we know that the population proportion is p, what are the mean and standard deviation for the distribution of the sample proportion? Assume you know that n = 1002 and p = .50. Use this information in problems 2-4....
1. Scores on an aptitude test form a normal distribution with a mean of 140 and...
1. Scores on an aptitude test form a normal distribution with a mean of 140 and a standard deviaition of 12. Find the percent that score between 131 and 155. Group of answer choices 12.10% 22.66% 32.44% 66.78% 10.56% 2. The scores of students on a standardized test form a normal distribution with a mean of 140 and a standard deviaition of 12. If 36000 students took the test, how many scored above 149? Group of answer choices 9634 7922...
"For a normal distribution with a mean of 16 and standard deviation of 2, what's the...
"For a normal distribution with a mean of 16 and standard deviation of 2, what's the probability of getting a number greater than 20? " "Consider a normal distribution with a mean of 25 and standard deviation of 4. Approximately, what proportion of the area lies between values of 17 and 33. " a. 95% b. 68% c. 99% d. 50% Two-hundred students took a statistics class. Their professor creatively decided to give each of them their Z-score instead of...
(1 point) The scores of a college entrance examination had a normal distribution with mean μ=550.6μ=550.6...
(1 point) The scores of a college entrance examination had a normal distribution with mean μ=550.6μ=550.6 and standard deviation σ=25.6σ=25.6. (a) What is the probability that a single student randomly chosen from all those who took the test had a score of 555 or higher? ANSWER: For parts (b) through (d), consider a simple random sample of 35 students who took the test. (b) The mean of the sampling distribution of x¯x¯ is: The standard deviation of the sampling distribution...
A normal population has a mean of 21 and a standard deviation of 5. a. Compute...
A normal population has a mean of 21 and a standard deviation of 5. a. Compute the Z value associated with 25 (round answer to 2 decimal places) b. What proportion of the population is between 21 and 25? (Round z-score computation to 2 decimal places and final answer to 4 decimal places) c. What proportion of the population is less than 17? (Round z-score computation to 2 decimal places and final answer to 4 decimal places)
Suppose X represents test scores with a mean of 80 and standard deviation 5. 14. Draw...
Suppose X represents test scores with a mean of 80 and standard deviation 5. 14. Draw a picture of this distribution. 15. If Bob got a score of 85, what is his Z-score? 17. If Bob has a Z-score of 0, what was his test score? (What is his X value?) Suppose the height of female OSU students has a normal distribution with mean 65 inches and standard deviation 2 inches. If Polly is 64 inches tall, what % of...
A. For the following distribution, X P(x) 0 0.130    1 0.310    2 0.350   ...
A. For the following distribution, X P(x) 0 0.130    1 0.310    2 0.350    3 0.190    4 0.020    What is the mean of the distribution? A. 0.890 B. 1.660 C. 0.480 D. 1.042 B. For a binomial distribution, the mean is 0.6 and n = 2. What is π for this distribution? A. 2.6 B. 0.3 C. 5.0 D. 1.3 C. For a binomial distribution, the mean is 5.0 and n = 5. What is π...
5 The graph illustrates the distribution of test scores taken by College Algebra students. The maximum...
5 The graph illustrates the distribution of test scores taken by College Algebra students. The maximum possible score on the test was 120, while the mean score was 78 and the standard deviation was 8. 546270788694102Distribution of Test Scores What is the approximate percentage of students who scored less than 62 on the test? % What is the approximate percentage of students who scored between 70 and 78? % What is the approximate percentage of students who scored lower than...
2.)Assume random variable Z follows standard normal distribution; find the value of the following probabilities. P(-1<Z<1)...
2.)Assume random variable Z follows standard normal distribution; find the value of the following probabilities. P(-1<Z<1) 3.)Assume random variable Z follows standard normal distribution; find the value of the following probabilities. P(0<Z<1) 4.)Assume random variable Z follows standard normal distribution; find the value of the following probabilities. P(Z>2) 5.)The natural log of growth of yucca tree is approximately normally distributed with mean of 0.053 mm and standard deviation 0.03mm. Determine the probability that a yucca tree has growth less than...