Problem 1 (Using Table 3 in the Appendix of textbook- The Normal Distribution Table) Average age...
Problem 1 (Using Table 3 in the Appendix of textbook- The Normal Distribution Table)
Average age of study participants was 60 years with standard deviation of 12 years. Assuming that there were 1000 participants in the study and the distribution of ages is well approximated by normal distribution; Find the upper 10th percentile of the distribution of ages.
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Problem 1 (Using Table 3 in the Appendix of textbook- The Normal
Distribution Table)
Average age...
The batting average for 1990-1999 can be approximated by a normal distribution with a mean= 0.270...
The batting average for 1990-1999 can be approximated by a normal distribution with a mean= 0.270 and standard deviation 0.030. Find the 90th percentile for the batting averages.
ne average age of doctors in a certain hospital is 43,0 years old. Suppose the distribution...
ne average age of doctors in a certain hospital is 43,0 years old. Suppose the distribution of ages s normal and has a standard deviation of 8.0 years. If 25 doctors are chosen at random for a committee, find the probability that the average age of those doctors is less than 43.8 years. Assume that the variable is normally distributed [6 marks) 14. A mandatory competency test for high school students has a normal distribution with a mean of 400...
R=8 please use z table for distribution question A researcher claimed that the average age of...
R=8
please use z table for distribution question
A researcher claimed that the average age of nurses in City B is at most 39 years. The researcher interviewed a random sample of 49 nurses from City B. The average age of the selected nurses was 40+ years. It is known that the ages of nurses in City B follow a normal distribution with a standard deviation of 5 years. Test the claim of the researcher using a z test with...
21. A gym has 2500 members. The ages of members have a normal distribution with mean...
21. A gym has 2500 members. The ages of members have a normal distribution with mean of 47 years and standard deviation of 12 years. How many members have ages between [23,71]? 22. The ages of members of a gym have a normal distribution with mean of 47 years and standard deviation of 12 years. The z - score of age of a gym member is 2.2. How old is this member? 23. About 45% of the population in a...
average commute of 31 minutes. normal distribution with standard deviation of 12 minutes. Find the 70th...
average commute of 31 minutes. normal distribution with standard deviation of 12 minutes. Find the 70th percentile for the commute time.
You have collected data about the average age of participants in your study. You are delighted...
You have collected data about the average age of participants in your study. You are delighted to find that the variable is normally distributed. If the mean age is 12 years and the standard deviation is 4 years. What is the median age for your subjects? 12 Greater than 12 years 8-16 years Unable to determine
The average age for a women having their last child is age 35. Assume the ages...
The average age for a women having their last child is age 35. Assume the ages for having the last child have a normal distribution with a standard deviation of 10 years. (a) What is the probability that a woman having her last child is between the ages of 30 and 37? (b) Approximately 45% of women have their last child before what age? Please write out.
Complete: Chapter 4 Problem Set < Back to Assignment Attempts: | Average: /2 Attention: Due to a ...
Complete: Chapter 4 Problem Set < Back to Assignment Attempts: | Average: /2 Attention: Due to a bug in Google Chrome, this page may not correctly. Click here to learn more. 11. The effect of transformations of scale on the mean and standard deviation You just completed a small research project for your psychology class concerning the effects of an event that happened two years ago on women's opinions and actions today. The mean age of participants in your study...
The age of trees in a certain forest has a normal distribution with a mean of...
The age of trees in a certain forest has a normal distribution with a mean of μ=192.7 years and standard deviation of σ=13 years. A sample of 36 trees is randomly selected and the average age of these trees, x¯, is recorded.
PROBLEM 1 It is well known that adult male heights follow a normal (Gaussian) distribution. The...
PROBLEM 1 It is well known that adult male heights follow a normal (Gaussian) distribution. The same is true of adult female heights. For general Canadian population in the range from 18 to 79 years of age, male height follows N(175 cm;7.5 cm), while female height follows N(162 cm; 7.5 cm). Depending on your gender, determine the following: I am (select one): O FEMALE MALE A. Make a (rough) sketch of the distribution, label it indicating the mean and your...
ne average age of doctors in a certain hospital is 43,0 years old. Suppose the distribution of ages s normal and has a standard deviation of 8.0 years. If 25 doctors are chosen at random for a committee, find the probability that the average age of those doctors is less than 43.8 years. Assume that the variable is normally distributed [6 marks) 14. A mandatory competency test for high school students has a normal distribution with a mean of 400...
R=8
please use z table for distribution question
A researcher claimed that the average age of nurses in City B is at most 39 years. The researcher interviewed a random sample of 49 nurses from City B. The average age of the selected nurses was 40+ years. It is known that the ages of nurses in City B follow a normal distribution with a standard deviation of 5 years. Test the claim of the researcher using a z test with...
21. A gym has 2500 members. The ages of members have a normal distribution with mean of 47 years and standard deviation of 12 years. How many members have ages between [23,71]? 22. The ages of members of a gym have a normal distribution with mean of 47 years and standard deviation of 12 years. The z - score of age of a gym member is 2.2. How old is this member? 23. About 45% of the population in a...
Complete: Chapter 4 Problem Set < Back to Assignment Attempts: | Average: /2 Attention: Due to a bug in Google Chrome, this page may not correctly. Click here to learn more. 11. The effect of transformations of scale on the mean and standard deviation You just completed a small research project for your psychology class concerning the effects of an event that happened two years ago on women's opinions and actions today. The mean age of participants in your study...
PROBLEM 1 It is well known that adult male heights follow a normal (Gaussian) distribution. The same is true of adult female heights. For general Canadian population in the range from 18 to 79 years of age, male height follows N(175 cm;7.5 cm), while female height follows N(162 cm; 7.5 cm). Depending on your gender, determine the following: I am (select one): O FEMALE MALE A. Make a (rough) sketch of the distribution, label it indicating the mean and your...
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