Distribution: [1,1,4,4,5,6,6,8,9,10] What is the third quartile (75th percentile) of this distribution?

Q: Test if there is a correlation between ice cream consumed and murders at the 5% level.    Ice Cream…

A: Solution: State the hypotheses. Null hypothesis: There is no correlation between ice cream consumed…

Q: The mean lifetime income of high school graduates in the United States is 2 million dollars higher…

A: @solution:::   Given data : typical high school student 7.5 hours 180 days  for 4 years  For…

Q: Using a z-table find the Z score for the 20th percentile and the 99th percentile

A: Here we have to find the 20th percentile and 99th percentile using Z table. Where Z is standard…

Q: Explain t Distribution? & it's Prerequisites?

A: From the given question, The student’s t-distribution can be defined as:

Q: Define variability and explain why it is an important concept in statistics. What are the three…

A: Variability is a measure of spread or dispersion. In a way it tell us the spread of each data point…

Q: The rule that describes the percentage of data within 1, 2, and 3 standard deviation of the mean is…

A:

Q: Search and describe the main feature of the t-Distribution (or Student distribution).

A: The t-distribution also known as Students' t-distribution is a continuous probability distribution.…

Q: not use ai please

A: The middle 50% means we have to find the quartile 1 to quartile 3 or between Q1 and Q3.  Given:In…

Q: Statistics students believe that the mean score on a first statistics test is 65. The instructor…

A:

Q: From below choose the correct histogram represent these data.…

A: We can create a histogram for this data. We represent the data on Y axis and Observation no. On X…

Q: The table shows the number of games in which a baseball player had 0, 1, 2,3, and 4 hits during the…

A: Proceed as shown

Q: Please calculate the test statistic

A: The data table provided in the question is as follows : Responses Old survey New survey…

Q: PLS HELP In a normal distribution, what z-score cuts off the top 20% of the distribution? z = -1.96…

A:

Q: I have the final exam scores of a Stats class, they are: 85, 82, 81, 83, 89, 96, 70, 71, 52, 30,…

A: The provided data set is: 85 82 81 83 89 96 70 71 52 30…

Q: The mean always has a z-score (value) →

A: When the data is converted into z scores, the mean will always end up being zero.

Q: Data Set: 48, 65, 68, 73, 82, 85, 86, 88, 88, 88, 90, 90, 91, 92, 98, 100. (N=16) shape of…

A: The given  Data Set is 48, 65, 68, 73, 82, 85, 86, 88, 88, 88, 90, 90, 91, 92, 98, 100

Q: A school gives an entry exam for admission. Suppose the score of this exam follows a normal…

A: Given that the score of the exam follows a normal distribution with a mean of 400 and a standard…

Q: how do you work this out

A: Note: Hey there! Thank you for posting the question. Since your question has more than 3 sub parts,…

Q: How is the shape of the F distribution affected by the degrees of freedom?

A: Given data How is the shape of F distribution affected by the degrees of freedom

Q: What are the shapes of these distributions? Are they symmetric, left, or right skewed? Are there any…

A: The box plot for the distribution of the gestation period of women who smoke and who do not smoke is…

Q: Lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of…

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: A pharmaceutical company makes tranquilizers. It is assumed that the distribution for the length of…

A: The population standard deviation is unknown here. The population distribution is approximately…

Q: What are the shapes of these distributions? Are they symmetric, left, or right skewed? Are there any…

A: 1. From the given box plot we see that the shapes of the given distribution is symmetric as area…

Q: lator to test the claim from 2019 that the population mean is 137 crimes per 1000 students on…

A:

Q: Body weights of 18 diabetics expressed as a percentage of ideal (defined as body weight divided by…

A: Stem and leaf plot.   The stems are listed in the left side of the vertical line and these numbers…

Q: and insert a frequency distribution and histogram of the box weights. Use 10 classes to build the…

A: Th Does the data contain any outliers? If yes, should those outliers be left in the data set for…

Q: Grades in an exam are normally distributed with a mean of 60 and a standard deviation of 10. What is…

A: We have given the following information.  Population mean = 60 Population standard deviation = 10.

Q: A researcher is collecting data about age of students at a prestige university. The data listed…

A: 20, 26, 18, 18, 21, 19, 31, 23, 21, 19, 27, 20, 20, 25, 31, 24, 20, 21, 19, 26, 22, 20, 23, 23, 22,…