2. The height of an adult male is known to be normally distributed with of mean of 69 inches and a standard deviation of 2.5 inches. One might expect in a group of 1,000 students that the number of heights greater than 64 inches is (A) 640 (B) 977 (C) 22 (D) 690

Q: 3. The weight of a regular bag of new powdered milk are normally distributed with mean 500 grams and…

A: We have given that.   X~N( μ , ?^2 )   μ =500, ? =?   Z-score =( x - μ )/?

Q: 4. Consider that in a population of Filipino adults ages 18 to 65, Body Mass Index (BMI) is normally…

A: Given: X~N(μ,σ)μ=28σ=6

Q: Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.47 and a…

A: Empirical rule: The probability that the observation under the normal curve lies within 1 standard…

Q: Consider a sample with a mean of 500 and a standard deviation of 100. What are the z-scores for the…

A: The mean is 500 and the standard deviation is 100.

Q: What is the maximum blood pressure reading of the lowest 70% of adult males?

A:

Q: 3. Suppose the mean blood glucose of a population of adults is 162 with a standard deviation σ=58.…

A: Given that, n=36,μ=162σ=58 The mean and standard deviation of sample mean is,

Q: An entrance examination is to be conducted to 1600 ncoming freshmen students at Gordon college which…

A: Let X be the variable denoting score of the exmination. X ~ N (μ, σ) Given mean, μ = 85 standard…

Q: 2. The mean afternoon temperature in Quezon City for the month of April is 37°C and the standard…

A: The normal distribution related problems can be solved by using the standard normal z score method…

Q: What is the degree of freedom between groups? What is the degree of freedom within groups? What is…

A: The provided information is There are 10 families in Makati and 12 families in Quezon. a=10, s=12…

Q: Suppose that wedding costs in the Caribbean are normally distributed with a mean of $8000 and a…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Suppose that the distribution of income in a certain tax bracket is approximately normal with a mean…

A: Probability distribution: A probability distribution function is the statistical function that…

Q: 4. The Fresha Tea Company pack tea in bags marked as 250 g. A large number of packs of tea were…

A: Let X denotes the weight of tea in a pack. We are given    μx=255  &  σx= 2.5 A pack will be…

Q: Suppose the distribution of typing speeds in words per minute for experienced typists can be…

A: The provided information is:

Q: 4. Distribution of heights of elderly English women is known to be normal with a mean height of 160…

A: As per Bartleby guideline expert have to answer first question three subpart only dear student…

Q: What value lies under a standard score of 1.5 in a distribution having a mean of 55 and standard…

A:

Q: 2. The mean height of the grade nine students at a certain high school is 164 centimeters and the…

A: The random variable height follows normal distribution. We have to find the probability of the…

Q: 2. Assume that, among residents of a large (over 6,000) Florida subdivision, the population mean age…

A: From the given information, The mean age is 65 and standard deviation is 2 years.

Q: Assume that the heights of men applying for Us Military training are normally distributed with a…

A: Given, Assume that the heights of men applying for Us Military training are normally distributed…

Q: An economist wants to find out if there is difference in the monthly expenses of families from…

A: Given that

Q: Suppose that the mean retail price per gallon of regular grade gasoline in the United States is…

A: Mean = 3.49 Standard deviation = 0.20

Q: 4.The lengths of trout in a certain lake are normally distributed with a mean of 7 inches and a…

A: For Normally distributed data, mean and standard deviation have given. Minimum size of sample…

Q: Assume that the heights of men applying for military academy training are normally distributed with…

A:

Q: Suppose that wedding costs in the Caribbean are normally distributed with a mean of $6000 and a…

A: Note: Hey as per our honor code i can answer only three sub parts. Thanx

Q: 24. Suppose annual salaries for sales associates at Target have a mean of $32,500 and a standard…

A: According to the provided information, Mean (μ) =$32500 Standard Deviation (σ) = $2500

Q: 7. The height of rugby players is normally distributed with a mean of 1.86 m and a standard…

A: Given: Population mean μ=1.86 Population standard deviation σ=0.08 Middle 80% so, α=1-0.80=0.20

Q: 3. The blood pressure of adult males is nomally distrībuted with a mean of 125mm/hg and a standard…

A: Given data,μ=125σ=8

Q: Suppose that the scores on a statewide standardized test are normally distributed with a mean of 67…

A: From the provided information, Mean (µ) = 67 Standard deviation (σ) = 6 Let X be a random variable…

Q: 4. Assume that the test scores from a college admission test are normally distributed with a mean of…

A: Given  μ= Mean of test score from a college admission test = 450 σ= Standard deviation of test score…

Q: Suppose the test scores in a class are normally distributed with a mean of 70 and a standard…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: Suppose that employees at a large company have salaries that are normally distributed, with a mean…

A: We have given that, Let X be a random variable i.e. salaries of employees are normally distributed…

Q: 2) The height of women in the United States fits a normal distribution with a mean height of 64.5…

A: using:- The table below shows Z values for commonly used percentiles.   Percentile Z 1st…

Q: Suppose a nomal distribution has a mean of 50 and a standard deviation of 3. What is Pes 47)?

A:

Q: Assume that the test scores from a college admissions test are normally distributed, with amean of…

A:

Q: Assume that the test scores from a college admissions test are normally distributed, with amean of…

A:

Q: Suppose that the heights of 4-year old boys are normally distributed with a mean of 103cm and a…

A: Let X be the random variable from normal distribution with mean (μ) = 103 cm and standard deviation…

Q: What is the standard deviation of a ribution that has a mean of 46.2 if a FORMANCE value of 28 is…

A: Given information: The mean of the distribution is µ = 46.2 The performance value is x = 28. The…

Q: The distribution of the number of hours people spend at work per day is unimodal and symmetric with…

A: Solution-: Given: μ=8hours,σ=0.7hours We find, (a) If Saba’s z-score for his work hours was −1.3 ,…

Q: 4. The lengths of trout in a certain lake are normally distributed with a mean of 7 inches and a…

A:

Q: Assume that a nomral distribution has a mean of 22 and a standard deviation of 7. What percentage of…

A:

Q: Suppose that water usages in American showers are normally distributed, with an average shower using…

A: Given Information: μ=20 and σ=3.2 (b) To estimate the percentage of showers that used more than 26.4…

Q: 2. If the heights of a male youngsters are normally distributed with a mean of 60 inches and a…

A:

Q: Suppose that water usages in American showers are normally distributed, with an average shower using…

A: We have given that,  X be the random variable from normal distribution with mean (μ) = 16.4 and…

Q: Assuming that the heights of college women are normally distributed with a mean of 62 inches and…

A:

Q: Suppose the durations of human pregnancies follow a mound-shaped distribution with a mean of 266…

A:

Q: The distribution of heights of adult American men is approximately normal with a mean of 69 inches…

A: Let, X=the heights of adult American men Given that X follows a normal distribution with mean=69 and…

Q: Suppose the distribution of typing speeds in words per minute for experienced typists can be…

A: Solution: Let X be the typing speed in words per minute. From the given information, X follows…

Q: 3. The annual per capita consumption of ice cream (in pounds) in the Philippines can be approximated…

A:

Q: Suppose the distribution of heights of a group of 300 children is normal, with a mean of 150…

A: Consider the provided data, Number of children = 300 mean, μ=150standard deviation, σ=12 We need to…

Q: Suppose that the average height of men in the United States is approximately normally distributed…

A: From the provided information, Mean (µ) = 70 Standard deviation (σ) = 4 X~N (70, 4) Here X be a…

Q: Assuming that the height of a college women are nobody distributed with mean 65 in and standard…

A: