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D Question 9 2 pts In Savannah, Georgia, the mean number of days in July with...
Question 6 9 pts The lengths of all pregnancies are normally distributed with a mean of...
Question 6 9 pts The lengths of all pregnancies are normally distributed with a mean of 273 days and a standard deviation of 20 days. If 64 women are randomly selected, find the probability that they have a mean pregnancy between 270.5 days and 275.5 days. Question 7 9 pts The distribution of body temperatures of all adults has a mean of 98.6°F and a standard deviation of 0.60° F. If a sample of 49 adults are randomly selected, find...
Question 19 2 pts 7. A shop owner wants to estimate the mean number of days...
Question 19 2 pts 7. A shop owner wants to estimate the mean number of days an item stays in his store before it sold. How many items are needed to estimate the mean number of days an item stays in his store within 3 points with 95% confidence assuming s=4 based on earlier studies? O 3 O 6 O 7 O2
Mean values and rms fluctuations. Every day for 20 days I counted the number of spiders...
Mean values and rms fluctuations. Every day for 20 days I counted the number of spiders in my office and recorded the following daily populations: 2, 8, 2, 6, 3, 5,7, 2, 2, 7, 5, 8, 6, 3, 5, 8, 0, 9, 3,1 (a) Find the mean population (or ф ) defined by where i is the J measurement and N is the total number of measurements. (b) For statistical mechanics, a more useful (but equivalent) definition of the population's...
4. The number X of days in the summer months that a construction crew cannot work because of the weather has the pr...
4. The number X of days in the summer months that a construction crew cannot work because of the weather has the probability distribution 6 0.03 7 0.08 8 0.15 9 0.20 10 0.19 11 0.16 12 010 13 0.07 14 002 Find the probability that no more than ten days will be lost next summer. Find the probability that from 8 to 12 days will be lost next summer Find the probability that no days at all will be...
Question 8 2 pts 8. The following data represent the number of games played in each...
Question 8 2 pts 8. The following data represent the number of games played in each series of an annual tournament from 1922 to 2002. Complete the mean of the random variable x. Round your answer to one decimal. Use this mean to answer the next question. x games played 1 2 3 4 P(x) 0.2 0.3 0.35 0.15 O 1.22 O 3.95 O 2.85 2.45 Question 9 2 pts 9. The following data represent the number of games played...
Need solution please, I'll upvote! Question 4 1/1 pts The number of days that homes stay...
Need solution please, I'll upvote!
Question 4 1/1 pts The number of days that homes stay on the market before they sell in Houston is bell- shaped with a mean equal to 66 days. Further, 95 percent of all homes are on the market between 52 and 80 days. Based on this information, what is the standard deviation for the number of days that houses stay on the market in Houston? 14 C9 3.5 ect! 07 Question 6 1/ 1...
2. Consider the following two variables X and Y: 4 a. (2 pts) Find the mean of X, and mean of Y b...
please lease solve all
questions.
2. Consider the following two variables X and Y: 4 a. (2 pts) Find the mean of X, and mean of Y b. (2 pts) Find the standard deviation of X, and standard deviation of Y C. (3 pts) Find the covariance between X and Y d. (2 pts) Find correlation coefficient between X and Y and comment on your answer. 3. The following table shows a random sample of 100 hikers and the areas...
D Question 9 9 pts The average age of all doctors is 42.0 years old with...
D Question 9 9 pts The average age of all doctors is 42.0 years old with a standard deviation of 11.0 years. If 16 doctors are chosen at random for a committee, find the probability that the mean age of those doctors is less than 43.50 years.
question 11, 12 and 13 thanks on advance! Question 11 5 pts Assume that the weight...
question 11, 12 and 13 thanks on advance!
Question 11 5 pts Assume that the weight of quarters are normally distributed with a man of 5.67g and a standard deviation of 0.07g. Find the probability that the next quarter you pick up weighs between 5.485 and 582. (Hint: Start by finding 2-scores! Answer to 4 decimal places 0.9806 Question 12 4 pts The serum cholesterol levels for men in one age group are normally distributed with a mean of 1782...
please answer all question 9-11 Question 9 2 pts z scores are useful because they: o...
please answer all question 9-11
Question 9 2 pts z scores are useful because they: o reduce the probability of Type I and Type Il errors, allow permit the transformation of raw scores into percentiles. o transform linear scores into nonlinear scores, convert nonlinear scores back into linear scores, and allow us to obtain comparisons between nonlinear and linear scores. Pelation to the mean of its underlying population allow comparisons to be made between stores from different distributions, and permit...
Question 6 9 pts The lengths of all pregnancies are normally distributed with a mean of 273 days and a standard deviation of 20 days. If 64 women are randomly selected, find the probability that they have a mean pregnancy between 270.5 days and 275.5 days. Question 7 9 pts The distribution of body temperatures of all adults has a mean of 98.6°F and a standard deviation of 0.60° F. If a sample of 49 adults are randomly selected, find...
Question 19 2 pts 7. A shop owner wants to estimate the mean number of days an item stays in his store before it sold. How many items are needed to estimate the mean number of days an item stays in his store within 3 points with 95% confidence assuming s=4 based on earlier studies? O 3 O 6 O 7 O2
Mean values and rms fluctuations. Every day for 20 days I counted the number of spiders in my office and recorded the following daily populations: 2, 8, 2, 6, 3, 5,7, 2, 2, 7, 5, 8, 6, 3, 5, 8, 0, 9, 3,1 (a) Find the mean population (or ф ) defined by where i is the J measurement and N is the total number of measurements. (b) For statistical mechanics, a more useful (but equivalent) definition of the population's...
4. The number X of days in the summer months that a construction crew cannot work because of the weather has the probability distribution 6 0.03 7 0.08 8 0.15 9 0.20 10 0.19 11 0.16 12 010 13 0.07 14 002 Find the probability that no more than ten days will be lost next summer. Find the probability that from 8 to 12 days will be lost next summer Find the probability that no days at all will be...
Question 8 2 pts 8. The following data represent the number of games played in each series of an annual tournament from 1922 to 2002. Complete the mean of the random variable x. Round your answer to one decimal. Use this mean to answer the next question. x games played 1 2 3 4 P(x) 0.2 0.3 0.35 0.15 O 1.22 O 3.95 O 2.85 2.45 Question 9 2 pts 9. The following data represent the number of games played...
Need solution please, I'll upvote!
Question 4 1/1 pts The number of days that homes stay on the market before they sell in Houston is bell- shaped with a mean equal to 66 days. Further, 95 percent of all homes are on the market between 52 and 80 days. Based on this information, what is the standard deviation for the number of days that houses stay on the market in Houston? 14 C9 3.5 ect! 07 Question 6 1/ 1...
please lease solve all
questions.
2. Consider the following two variables X and Y: 4 a. (2 pts) Find the mean of X, and mean of Y b. (2 pts) Find the standard deviation of X, and standard deviation of Y C. (3 pts) Find the covariance between X and Y d. (2 pts) Find correlation coefficient between X and Y and comment on your answer. 3. The following table shows a random sample of 100 hikers and the areas...
D Question 9 9 pts The average age of all doctors is 42.0 years old with a standard deviation of 11.0 years. If 16 doctors are chosen at random for a committee, find the probability that the mean age of those doctors is less than 43.50 years.
question 11, 12 and 13 thanks on advance!
Question 11 5 pts Assume that the weight of quarters are normally distributed with a man of 5.67g and a standard deviation of 0.07g. Find the probability that the next quarter you pick up weighs between 5.485 and 582. (Hint: Start by finding 2-scores! Answer to 4 decimal places 0.9806 Question 12 4 pts The serum cholesterol levels for men in one age group are normally distributed with a mean of 1782...
please answer all question 9-11
Question 9 2 pts z scores are useful because they: o reduce the probability of Type I and Type Il errors, allow permit the transformation of raw scores into percentiles. o transform linear scores into nonlinear scores, convert nonlinear scores back into linear scores, and allow us to obtain comparisons between nonlinear and linear scores. Pelation to the mean of its underlying population allow comparisons to be made between stores from different distributions, and permit...
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