QUESTION 5 Tires are found to have a mean life of 800 hours. The standard deviation...
1. A population has a mean of 60 and a standard deviation of 30. Samples of size 16 are randomly selected. Calculate the standard deviation of the sample distribution X. 2. Samples of size 16 are drawn from a population. the sampling distribution for X has a standard deviation of 0.25. Find the standard deviation of the population. 4. Tires are found to have a mean life of 40,000 miles. The standard deviation is 8000. A sample of 400 is...
Light bulbs are found to have a mean life of 800 hours. The standard deviation is 160. A sample of 400 is chosen. Find the probability that 798 < x < 802
QUESTION 11 Light bulbs are found to have a mean life of 800. The standard deviation is 160. A sample of 400 is chosen. Find the probability that 810 < X
9. A bag contains 1 green marble and 3 red marbles. 3 times a marble is removed from the bag, its color noted, and then returned. Success is getting a green marble. Find the probability of getting three green marbles. 10. A population has a mean of 60 and a standard deviation of 61. Samples of size 100 are randomly selected. Calculate the standard deviation of the sample distribution X. 11. Tires are found to have a mean life of...
Please help with 5,6,7, please show your work as well!
10 out of 10 points Question 1 A population has a mean of 60 and a standard deviation of 30. Samples of size 16 are randomly selected. Calculate the standard deviation of the sample distribution of X. Round off to 3 decimal places. 15 out of 15 points Question 2 Samples of size 16 are drawn from a population. The sampling distribution for X has a standard deviation of 0.25....
Can you answer questions 2,3,4
&show work
10 out of 10 points Question 1 A population has a mean of 60 and a standard deviation of 30. Samples of size 16 are randomly selected. Calculate the standard deviation of the sample distribution of X. Round off to 3 decimal places. 15 out of 15 points Question 2 Samples of size 16 are drawn from a population. The sampling distribution for X has a standard deviation of 0.25. Find the standard...
Can you please help with 2,3,4
I am so confused!! Please show work as well
10 out of 10 points Question 1 A population has a mean of 60 and a standard deviation of 30. Samples of size 16 are randomly selected. Calculate the standard deviation of the sample distribution of X. Round off to 3 decimal places. 15 out of 15 points Question 2 Samples of size 16 are drawn from a population. The sampling distribution for X has...
7. A carnival game costs $6 to play. The probability of winning is 0.25 and the prize is $30. Let x be the gain or loss of the player each time the game is played. Find the expected value or mean value of x. 8. Find the standard deviation of the following discrete probability distribution. A=0.1 x P(x) 0 A 1 0.4 2 1-A 9. A bag contains 1 green marble and 3 red marbles. 3 times a marble is...
1) A sample of size 25 is chosen from a population. Assume the probability distribution is normal. If the mean of the sample is 80 and the standard deviation is 6, find the lower bound of the 99% confidence interval. Round off to three decimal places. 2) A sample of size 36 is chosen from a population. The sample mean is 50 and the standard deviation is 5. Find the upper limit of the 95% confidence interval for the population...
Question 2 The average lifetime of a light bulb is 3,000 hours with a standard deviation of 696 hours A simple random sample of 36 bulbs is taken. a. What is the probability that the average life in the sample will be greater than 3,219 hours? What is the probability that the average life in the sample will be less than 3,180 hours? c. What is the probability that the average life in the sample will be between 2,670 and...