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JeCLUIT Operlei 12.4 Women's heights average 65 inches with a standard deviation of 2.8 inches in...
im so lost! any help will be appreciated (3) Bulldog's weights are normally distributed with an...
im so lost! any help will be appreciated
(3) Bulldog's weights are normally distributed with an average 42 pounds with standard deviation of 3.5 pounds in a certain study. Use the 68-95-99.7 rule to determine the typical ranges of the bulldog's weights. a In what range will approximately the middle 68% of the bulldog's weights lie? Between lbs and lb In what range will approximately the middle 95% of the bulldog's weights lie? Between lbs lbs and In what range...
451 In the United States, the mean and standard deviation of adult women's heights are 65...
451 In the United States, the mean and standard deviation of adult women's heights are 65 inches (5 feet 5 inches) and 3.5 inches, respectively. Suppose the American adult women's heights have a normal distribution. a. If a woman is selected at random in the United States, find the probability that she is taller than 5 feet 8 inches. b. Find the 72nd percentile of the distribution of heights of American women. c. If 100 women are selected at random...
Show all work by hand. A statistics professor at an all-women's college determined that the standard deviation of women's heights is 2.5 inches. The professor claims that men's heights ar...
Show all work by hand.
A statistics professor at an all-women's college determined that the standard deviation of women's heights is 2.5 inches. The professor claims that men's heights are more variable than women's heights. To test the claim, he randomly selected 41 male students from a nearby all-male college and found the standard deviation to be 2.9 inches. Use this sample data and a significance level of a 0.01 to test the professor's claim that the standard deviation of...
The mean height for a normal distribution of heights is 65 inches and the standard deviation...
The mean height for a normal distribution of heights is 65 inches and the standard deviation is 3 inches. Let x represent height. a) P(62< x < 68) b) P(x >70) c) P(x<65)
If a variable has a distribution that is bell-shaped with mean 21 and standard deviation 5,...
If a variable has a distribution that is bell-shaped with mean 21 and standard deviation 5, then according to the Empirical Rule, 95.0% of the data will lie between which values? (This is a reading assessment question. Be certain of your answer because you only get one attempt on this question.) According to the Empirical Rule, 95.0% of the data will lie between _______ and______. (Type integers or decimals rounded to two decimal places as needed. Use ascending order.)
(2)Heights of adult males are normal distributed with a mean of 65 inches and a standard...
(2)Heights of adult males are normal distributed with a mean of 65 inches and a standard deviation of 2 inches: a) Find the probability that randomly chosen male will have a height between 61 and 68 inches. b) Suppose you are the curator of James Madison's house where the height of the door jams are 70 inches. What is the chance that a randomly selected male will have to duck through the doorway? c) You are designing a new building...
(1 point) The distribution of heights of adult men in the U.S. is approximately normal with mean 69 inches and standard deviation 2.5 inches Use what you know about a normal distribution and the...
(1 point) The distribution of heights of adult men in the U.S. is approximately normal with mean 69 inches and standard deviation 2.5 inches Use what you know about a normal distribution and the 68-95-99.7 rule to answer the following NOTE: If your answer is a percent, such as 25 percent, enter: "25 PERCENT" (without the quotes). If your answer is in inches, such as 10 inches, enter: "10 INCHES" (without the quotes and with a space between the number...
Heights for a certain group of people are normally distributed with mean-64 inches and standard deviation-2.9...
Heights for a certain group of people are normally distributed with mean-64 inches and standard deviation-2.9 inches. Find the proportion of people in the group whose heights fall into the following ranges. (Round your answers to four decimal places.) (a) Between 61 inches and 64 inches (b) Between 57 Inches and 71 inches. (c) Less than 71 inches. (d) Greater than 57 inches (e) Either less than 57 Inches or greater than 71 inches You may need to use the...
1. Among various ethnic groups, the standard deviation of heights is known to be approximately three...
1. Among various ethnic groups, the standard deviation of heights is known to be approximately three inches. Construct a 90% confidence interval for the mean height of male Russians based on the sample size forty where the sample mean was 68 includes and the sample standard deviation is 3.32 inches. SHOW CALCULATOR INPUT THANK YOU 2. Suppose that an accounting firm does a study to determine the time needed to complete one person's tax forms. It randomly surveys 50 people....
Women’s Heights Assume that Women’s heights are normally distributed with mean μ=63.6 in. and standard deviation...
Women’s Heights Assume that Women’s heights are normally distributed with mean μ=63.6 in. and standard deviation σ=2.5 in. Use StatKey to answer the following questions. Include a screenshot from StatKey for each question. Find the percent of women with heights between 58.6 and 68.6 inches. Find the percent of women with heights between 60 inches and 65 inches. Find the height of a woman in the 95th percentile, (taller than 95% of other women.) Life Expectancy Part 4 From the...
im so lost! any help will be appreciated
(3) Bulldog's weights are normally distributed with an average 42 pounds with standard deviation of 3.5 pounds in a certain study. Use the 68-95-99.7 rule to determine the typical ranges of the bulldog's weights. a In what range will approximately the middle 68% of the bulldog's weights lie? Between lbs and lb In what range will approximately the middle 95% of the bulldog's weights lie? Between lbs lbs and In what range...
451 In the United States, the mean and standard deviation of adult women's heights are 65 inches (5 feet 5 inches) and 3.5 inches, respectively. Suppose the American adult women's heights have a normal distribution. a. If a woman is selected at random in the United States, find the probability that she is taller than 5 feet 8 inches. b. Find the 72nd percentile of the distribution of heights of American women. c. If 100 women are selected at random...
Show all work by hand.
A statistics professor at an all-women's college determined that the standard deviation of women's heights is 2.5 inches. The professor claims that men's heights are more variable than women's heights. To test the claim, he randomly selected 41 male students from a nearby all-male college and found the standard deviation to be 2.9 inches. Use this sample data and a significance level of a 0.01 to test the professor's claim that the standard deviation of...
(2)Heights of adult males are normal distributed with a mean of 65 inches and a standard deviation of 2 inches: a) Find the probability that randomly chosen male will have a height between 61 and 68 inches. b) Suppose you are the curator of James Madison's house where the height of the door jams are 70 inches. What is the chance that a randomly selected male will have to duck through the doorway? c) You are designing a new building...
(1 point) The distribution of heights of adult men in the U.S. is approximately normal with mean 69 inches and standard deviation 2.5 inches Use what you know about a normal distribution and the 68-95-99.7 rule to answer the following NOTE: If your answer is a percent, such as 25 percent, enter: "25 PERCENT" (without the quotes). If your answer is in inches, such as 10 inches, enter: "10 INCHES" (without the quotes and with a space between the number...
Heights for a certain group of people are normally distributed with mean-64 inches and standard deviation-2.9 inches. Find the proportion of people in the group whose heights fall into the following ranges. (Round your answers to four decimal places.) (a) Between 61 inches and 64 inches (b) Between 57 Inches and 71 inches. (c) Less than 71 inches. (d) Greater than 57 inches (e) Either less than 57 Inches or greater than 71 inches You may need to use the...
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