How many of the people surveyed will have a weight between 130 and 140lbs?

Q: You throw a ball as far as you can 5 times, recording the distance for each throw: 165 feet, 184…

A: since only 5 observation is given we will consider them as sample (n = 5)and population (N = 100)…

Q: The weights in ounces of newborn infants were recorded by a hospital. The weights were 88, 99, 82,…

A: Given data,   88, 99, 82, 81, 84 and 100   First find the sample mean. Mean:

Q: A population has mean 49 and standard deviation 5. What is the data value that has a z-score of 2?…

A:

Q: lves have a mean  weight of 100 pounds, with a standard deviation of 24 pounds. Find the weight…

A: Find the weight range for the central 82% of the wolves.

Q: A successful basketball player height is 203 cm. His converts to the z score of 4.10. How many…

A: Consider, X = 203  z-score = 4.10 z-score is a numerical value that tells the number of standard…

Q: A researcher measures the amount of food consumed by each dog in her lab. She finds that the mean…

A: It is given that mean amount of food is 12 oz and number of dogs is 16. The sum of squared…

Q: A large chemistry exam course took their final exam. The mean was 75 with a standard deviation of 8.…

A: Obtain the Z-score of the random variable X equals 60. The Z-score of the random variable X equals…

Q: The mean grade on a science test was 79 and there was a standard deviation of 6. If your sister…

A: The z score explains the deviations of the observations from the mean. It is calculated using the…

Q: A successful basketball player has a height of 6 feet 2 ​inches, or 188 cm. Based on statistics from…

A: Given the Z score of height of basket ball player is 1.95. The original height of the basket ball…

Q: The mean grade on a science test was 79 and there was a standard deviation of 6. If your sister…

A: We have given that,  Let X be the random variable from normal distribution with mean (μ)= 79,…

Q: Five hundred children participated in a field demonstration. Their heights averaged 110 cm with a…

A: Let X be a random variable such that X: Height of the children Since the sample is large (500)…

Q: A study studied the birth weights of 2,008 babies born in the United States. The mean weight was…

A: From the provided information, Total babies (N) = 2,008 Mean weight of babies (µ) = 3234 grams…

Q: A data set has size of 40. How many observations lie within two standard deviations of either sides…

A: The 68-95-99.7% (Empirical) Rule: For a normal distribution, the empirical rule (68-95-99.7% Rule)…

Q: A researcher collects the distances between survey respondents and the closest grocery store. The…

A:

Q: The weights of 1,000 children average 50kg and the standard deviation is 5kg. How many children…

A: Given  mu=50, sigma=sd=5, n=1000 We want to find How many children weigh between 40kg and 55 kg?

Q: Suppose a biologist studying the mechanical limitations of tree growth monitors a national preserve.…

A: Given data is45,80,71,67,45,92,87,67,76,45

Q: A successful basket ball player has a height of 6 feet 4 inches. Based on statistics his height…

A: As given, The basketball player has a height of 6 feet 4 inches and when his height is converted to…

Q: How does the median birth weight compare to the average birth weight?

A: Given that birth weights of children born in the United States are normally distributed with mean =…

Q: find the mean if Z-score =14, st.Dev.=2.5, for a score of 8.5

A: Standard normal distribution:The standard normal distribution is a special case of normal…

Q: A large chemistry course took their final exam. The mean was 75 with a standard deviation of 8. What…

A:

Q: The mean height of a population of men is 70.8 inches and the standard deviation is 3.2 inches. What…

A:

Q: Christopher is 6' (72") tall.  The population mean height for men in the United States is 5' 10"…

A: Let X be the height for men in inches.Here,X~N(70,32),i.e.,X~N(70,9).Let x be the value of…

Q: The speed of cars driving past Johnson City High School, on 666 Reynolds Rd, were recorded over one…

A: In this intriguing analysis centered around traffic speeds near Johnson City High School, the…

Q: 2.In the mid-19thcentury, Sir Francis Galton demonstrated, through extensive data collection, that…

A:

Q: Two teachers recorded test scores of a small group of students. What is the approximate difference…

A: From the provided information, Bowman group score: 69, 73, 79, 83, 93, 97, 98, 100 Gray group score:…

Q: The mean height of Americans in 1776 was 67 inches with a standard deviation of 3 inches.  George…

A: Given,mean(μ)=67 inchesStandard deviation(σ)=3 inches   Empirical rules:1) P(μ-σ<X<μ+σ)=68%2)…

Q: A person in the U.S. eats about 25 pounds of M&M's per year with a standard deviation of 3 pounds.…

A: Solution: Given  μ= 25 Pounds  Population meanσ= 3 Pounds Population standard deviations Assumed…

Q: Five hundred children participated in a field demonstration. Their heights averaged 110cm with a…

A:

Q: The heights of 1,000 college students are normally distributed about a mean value of 170…

A: Given : sample size (n)=1000Mean (μ) =170standard deviation (σ)=7.2 X follows normal distribution  Z…

Q: What percentage of the scores are in the shaded area?

A: It is given that the shaded area in graph.

Q: Find the mean, standard deviation, and relative standard deviation for the set of measurements (7,…

A: Mean: The mean value is calculated as follows: The sum of the observations is divided by the number…

Q: A mean of 200 and a standard deviation of 50. Find P60, the score which separates the lower 60% form…

A:

Q: Five hundred children participated in a field demonstration. Their heights averaged 110 cm with a…

A: