The average price of a college math textbook is $160 and the standard deviation is $26. Suppose that 13 textbooks are randomly chosen. Round all answers to 4 decimal places where possible.What is the distribution of ¯xx¯? ¯xx¯~ N(,) For the group of 13, find the probability that the average price is between $170 and $179. Find the third quartile for the average textbook price for this sample size. $ (round to the nearest cent)For part b), is the assumption that the distribution is normal necessary? YesNo

Q: The average price of a college math textbook is $153 and the standard deviation is $20. Suppose that…

A: Solution To find probability we will use excel.

Q: The average price of a college math textbook is $153 and the standard deviation is $20. Suppose that…

A: Since, you have you have posted a question with multiple subparts we will solve first three subparts…

Q: The average price of a college math textbook is $150 and the standard deviation is $20. Suppose that…

A: We have to find probability for given data.

Q: The average price of a college math textbook is $176 and the standard deviation is $24. Suppose that…

A:

Q: The average production cost for major movies is 69 million dollars and the standard deviation is 18…

A: Mean = 69 Standard deviation = 18 Sample size = 39

Q: Calculate the standard score (z-score) of the given sample mean. Round your answer to two decimal…

A: Given,mean(μ)=12standard deviation(σ)=5sample size(n)=83sample mean(x¯)=11

Q: ¯xx¯ ~ N(,) For the group of 6, find the probability that the average price is between $166 and…

A: Given: Mean, μ=171 Standard deviation, σ=23 Sample size, n = 6 1. Distribution of x: Sample mean,…

Q: Given are 3 observations for the monthly profits (in 1000s) for a group of small businesses.…

A: We have given that,  The data is,  28, 29, 22 Then,  We will find the standard deviation (s) = ?

Q: 4. If P(X) =, what are the possible values of X for it to be a probability distribution? А. О, 2, 3…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: c. The 95th percentile for novels is words. (Round to the nearest word) d. The middle 40% of romance…

A: Given, Number of words in romance novel follows normal distribution with mean 64,169 and standard…

Q: The average price of a college math textbook is $165 and the standard deviation is $29. Suppose that…

A: Given data is:We have to find out the probability for the given data.

Q: The average price of a college math textbook is $157 and the standard deviation is $21. Suppose that…

A: 1. Suppose a random variable X defines the price of a college math textbook.

Q: instructor gives a 100-point examination in which the grades are normally distributed. The mean is…

A: It is given that  Mean, μ = 66 Standard deviation, σ = 5

Q: The director of research and development testing and new drugs she wants to know if there's evidence…

A: Test statistic:Denote μ as the claimed mean; μ = 384. In a random sample of n = 79, the sample mean…

Q: The average production cost for major movies is 59 million dollars and the standard deviation is 19…

A: Hello! As you have posted more than 3 sub-parts, we are answering the first 3 sub-parts.  In case…

Q: A large group of students took a statistics test.               The mean score, from the scale of…

A:

Q: Los Angeles workers have an average commute of 33 minutes. Suppose the LA commute time is normally…

A: Let, x denotes the commute time for randomly selected LA worker. It is given that- x~N33,13

Q: The average price of a college math textbook is $167 and the standard deviation is $30. Suppose that…

A: Introduction: Define X as the random variable of interest here, denoting the price of a randomly…

Q: The average price of a college math textbook is $177 and the standard deviation is $29. Suppose that…

A: It is given that  Mean, μ = 177 Standard deviation, σ = 29 Sample size, n = 43   Note: According to…

Q: The length of a fully grown hibiscus plants is normally distributed and has a mean of 35cm and a…

A: Given that,Mean(μ)=35standard deviation(σ)=4     The random variable  is length of fully grown…

Q: Given are 3 observations for the monthly profits (in 1000s) for a group of small businesses. Monthly…

A:

Q: A frequency distribution has a mean of 100 and a standard deviation of 20. The class limits for one…

A: From the provided information, Mean (µ) = 100 Standard deviation (σ) = 20 The class limits for one…

Q: n a large section of a statistics​ class, the points for the final exam are normally​ distributed,…

A: Note: Since you have posted a question with multiple subparts, we will solve the first three…

Q: a. What is the distribution of ? a - N( b. For the group of 44, find the probability that the…

A: a. The mean is 167, standard deviation is 28. The sample size is 44. Let x¯ represents the average…

Q: A biologist is studying the plant diversity in 15 million acres of the Sierra Nevada Mountains. He…

A: The answer is given in below image:

Q: Determine if the statement is true or false. In a normal distribution, about 95% of all data values…

A: we know the empirical rules…

Q: Suppose that the average number of Facebook friends users have is normally distributed with a mean…

A:

Q: The average price of a college math textbook is $171 and the standard deviation is $28. Suppose that…

A:

Q: Suppose that the amount of time that students spend studying in the library in one sitting is…

A:

Q: The lengths of adult males' hands are normally distributed with mean 185 mm and standard deviation…

A: Given Information: The lengths of adult males' hands are normally distributed Mean μ=185 mm and…

Q: Determine whether the normal distribution can be used to compare the following population…

A:

Q: The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 75…

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

Q: The average price of a college math textbook is $153 and the standard deviation is $24. Suppose that…

A: Note: Please repost part d as i can answer only 3 subparts as per my policy.

Q: A large group of students took a statistics test.               The mean score, from the scale of…

A:

Q: The percent fo Coloradans that own a Subaru is 56%. If you were to take a random sample of size 70,…

A: We have given that,  Let X be the random variable from binomial distribution with probability (p) =…

Q: The lengths of adult males' hands are normally distributed with mean 191 mm and standard deviation…

A: The question is about sampling distributionGiven :Population mean length of hands of adults males' (…

Q: The average price of a college math textbook is $157 and the standard deviation is S24. Suppose that…

A:

Q: The patient recovery time from a particular surgical procedure is normally distributed with a mean…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: The average price of a college math textbook is $171 and the standard deviation is $23. Suppose that…

A:

Q: The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 66…

A: Note: Please repost remaining subparts as i can answer only 3 subparts as per my policy. Given…

Q: Please help with A B C

A: Given Information: Mean μ=9.1 Standard deviation σ=1.7 Sample size n=35

Q: The amount of pollutants that are found in waterways near large cities is normally distributed with…

A: [NOTE : As per the rules, only the first 3 subparts are solved.] Given that, The amount of…

Q: The average price of a college math textbook is $153 and the standard deviation is $29. Suppose that…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.