The weight of all cans of coffee has a standard deviation of 0.76 ounces. A sample of 48 cans of coffee is taken study. Which of the following best describes the distribution of x¯? A. The distribution of x¯ is normal becuase it is always normal B. The distribution of x¯ may not be approximately normal because n = 48 C. The distribution of x¯ is approximately normal becuase n = 48 D. The distribution of x¯ is not normal because the population is normal E. None of the above

Q: The average amount of money spent for lunch per person in the college cafeteria is $6.2 and the…

A: Here, 43 samples are collected. b.) Hence, if the sample mean is denoted by x, then, x~N(μ,σ2n),…

Q: A set of data items is normally distributed with a mean of 60. Convert the data item to a z-score,…

A:

Q: Naomi scores 39 on a test. The standard deviation is 6.00. Her z score is +1.5. What is the mean of…

A: given data x = 39 σ = 6z = 1.5μ = ?

Q: Which of the following measurements is likely to have the least variation (i.e. which dataset would…

A: Statements are given.

Q: K Listed in the data table are IQ scores for a random sample of subjects with medium lead levels in…

A: n1=n2=11, x¯2=91.088, s2=10.092

Q: a class of 30 nursing students took a test worth 100 points. the standard deviation of the score was…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 121…

A: Note: Hi there! Thank you for posting the question. As there are multiple sub-parts, according to…

Q: For a distribution, the mean was The z-score for a value is negative, which of the following…

A: Z-score is the number of standard deviations, a given data point lies from the mean.

Q: A population of insect weights is normal with the mean of u = 16. If the probability of a weight…

A: Here the given information is A population of insect weights is normal with the mean of u = 16. If…

Q: Is race a factor in the number of times a month a person eats out? The table below shows data that…

A: ANOVA: The analysis of variance (ANOVA) is used to determine whether there are any statistically…

Q: 20. Find the mean and standard deviation of the following data:

A: Class Frequency 1 - 5 2 6 - 10 5 11 - 15 2 16 - 20 1

Q: A normal distribution of heights of adult women from a certain region has a mean of 68.7 inches and…

A:

Q: According to Chebyshev's rule, within 10 standard deviations from the mean, lies at least of any…

A: Given Information: According to Chebyshev's rule, within 10 standard deviations from the mean, lies…

Q: A set of data is normally distributed with a mean value of 229 and a standard deviation of 9.2. What…

A: Suppose the variable of interest is x.The random variable x follows normal distribution with mean…

Q: A sample of university students has an average GPA of 2.78 with a standard deviation of 0.45. If GPA…

A: as per bartleby guideline expert have to answer first three subpart only dear student please upload…

Q: Given that the mean for a data set is 24.8 and the standard deviation is 2.3, find the z-score of…

A:

Q: 8. Use any method to calculate the sample mean, median, and standard deviation of the following…

A: Introduction: The mean, median, standard deviation of the values must be calculated for the first…

Q: Assume that the heights of women are normally distributed with a mean of 62.7 inches and a standard…

A: Given that height of the women are normally distributed with mean of 62.7 inches and a standard…

Q: C. What percentage of the students studied for more than 5.8 hours? d. Harry noticed that he scored…

A: Given :  Mean = 4.6 Standard deviation = 1.2

Q: A sample of university students has an average GPA of 2.78 with a standard deviation of 0.45. If GPA…

A:

Q: 1.Determines in a table, the average, median and standard deviation of each of the distributions to…

A: From the given information: Age Girl reaction time Boy reaction time 8 5 47 9 5 46 10 48 44…

Q: Determine whether the following graph can represent a variable with a normal distribution. Explain…

A: Given:

Q: A set of data items is normally distributed with a mean of 200 and a standard deviation of 50. Find…

A:

Q: Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed…

A:

Q: The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 120…

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

Q: A standardized test has a mean of 70 and a standard deviation of 5. John has a score of 60. What is…

A: Given,mean(μ)=70standard deviation(σ)=5john has a score(X)=60

Q: Which statement is true about where 95% of the possible string tension weight is?

A: A stringing machine is a device for adjusting the tension of strings in a tennis racket. Some tennis…

Q: At a tennis tournament a statistician keeps track of every serve.  The statistician reported that…

A: GivenMean(μ)=100standard deviation(σ)=9

Q: A recent study explores the relationship between teacher unions and student educational performance…

A: Given that, A recent study explores the relationship between teacher unions and student educational…

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

A:

Q: 5. What percentage of students would we expect to score between 816 and 1236? 1236-1026 341 210 0…

A: It is given that Mean = 1026Standard deviation = 210

Q: The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 122…

A: It is an important part of statistics. It is widely used.

Q: Find the X-value (score) corresponding to each of the following Z-score.

A: Given the distribution whose mean is 50 and whose standard deviation is 8.

Q: The mean weight of Sumo wrestlers is 350 pounds with a standard deviation of 25 pounds. Assume the…

A: Mean μ=350 pounds Standard deviation σ =25 pounds Significance level α=0.003 The middle 99.7%…

Q: A manufacturer claims that the mean weight of its ice cream cartons is 10 ounces with a standard…

A: The random variable is weight of ice cream cartons. The population mean is 10 ounces. The population…

Q: Systolic blood pressure readings are normally distributed with a mean of 121 and a standard…

A:

Q: Sketch a standard normal curve and shade the area that lies to the left of a. 2.19, b. -1.63, c. 0,…

A: a)Givenleft of 2.19

Q: A set of data items is normally distributed with a mean of 60. Convert the data item to a z -score,…

A: Solution: z-score for given data item is 1.

Q: B. Direction: Create a normal distribution using a normal curve and answer the following questions.…

A:

Q: tµ, be the mean diastolic blood pressure for women and let u, be the mean diastolic blood pressure…

A: The claim is that women and men have the same mean diastolic blood pressure.