the distribution is normal. Let X be the number of words in a randomly selected romance novel. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X~ N( b. Find the proportion of all novels that are between 51,956 and 65,733 words. c. The 80th percentile for novels is words. (Round to the nearest word)

Q: A rods manufacturer makes rods with a length that is supposed to be 15 inches. A quality control…

A: Note: As per my policy i can answer only three sub parts. kindly repost the remaining sub parts.…

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 4.2…

A: From the provided information, Mean (µ) = 4.2 Standard deviation (σ) = 0.9 X~N (4.2, 0.9) Here X be…

Q: part D E

A: Given information: Treatment 1 Treatment 2 435.16 414.61 338.99 503.46 488.73 425.22…

Q: For the following two samples, A and B, the sampling standard error for the difference between the…

A: Given: n1 = 7 n2 = 7 Formula Used: Sampling standard error = Sp1n1+1n2 Where, Sp is pooled or…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Use EXCEL…

Q: Please draw the histogram for the data set below: 24 5 8 15 12 16 22 28 30 29 16 50 39 42 50

A: The answer is attached below,

Q: um of the pecifically

A: Let x1,x2...,x10 be the life span of parts including gamma.

Q: A pet store surveyed 178 people to see how many own a bird and how many own a cat. The Venn diagram…

A: Given data, No of bird owners =37 No of cat owners=28 Bird & cat owners =39 No bird or cat…

Q: A pipes manufacturer makes pipes with a length that is supposed to be 17 inches. A quality control…

A: Given data A pipes manufacturer makes pipes with a length that is supposed to be 17 inches 34 pipes…

Q: A survey found that women's heights are normally distributed with mean 63.8 in and standard…

A: (a)  Obtain the percentage of women meeting the height requirement. The percentage of women…

Q: 1. A normal distribution has a mean m = 58 with s= 2. What is the probability of selecting an…

A: As per our guidelines we are suppose to answer only one question1)GivenMean(m)=58standard…

Q: The average income in Boston is 6200 witha standard deviation of 8000, while the average income in…

A: GivenFor BostonMean(μ)=6200standard deviation(σ)=8000For chicagoMean(μ)=48000standard…

Q: Stratified sampling 1. Can be more representative than simple randomized sampling II. Can be used if…

A: When the underlying population is equally divided into groups that have same properties or based on…

Q: Determine the type of direction of correlation that you would expect of the given case / situation.…

A: Positive correlation means Both variables moves in Same direction. While Negative Correlation means…

Q: Imagine you've just started a small business, and you just launched your social media page for your…

A: From the data, x x2 320 102400 320 102400 340 115600 340 115600 345 119025 345 119025…

Q: please solve the following, don't copy from chegg or anywhere i need unique examples  thanks a.…

A: Given that : Here we use the correlation concept to solve this problem.

Q: 1 b) For any data set, approximately 95% of the observations fall in the interval (T − 2s, T+2s).…

A:

Q: Data on investments in the high-tech industry by venture capitalists are compiled by a corporation.…

A:

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A: Given data: Mean = 122000 Standard deviation  =41000 Sample size = 97

Q: Q2: Use Linear Least-Squares Regression to fit the following variables: 7 10.1 Xi yi 1 1.3 2 3.5 3…

A: Given data set is xi yi 1 1.3 2 3.5 3 4.2 4 5.0 5 7.0 6 8.8 7 10.1 8 12.5 9 13…

Q: The government of a town needs to determine if the city's residents will support the construction of…

A: The government of a town needs to determine if the city's residents will support the construction of…

Q: Spatial perception is measured on a scale from 0 grade students are tested for spatial perception.…

A: A random sample of 18 students with average score 6 and standard deviation is 1.815; n=18…

Q: with x,y=1,2,3,...,

A: Given as, fx=4xyn2 n-12

Q: A researcher reports that the average income of system analysts in Makati is P44,000 per month. A…

A: Given: Average(μ)=44000sample size(n)=30Sample mean(x¯)=45800Standard deviaion(s)=5400

Q: A particular fruit's weights are normally distributed, with a mean of 539 grams and a standard…

A: Given data: Mean = 539 Standard deviation  = 13 Sample size = 15

Q: The relative frequency histogram represents the length of phone calls on George's cell phone during…

A: The option is D.

Q: You need to have a passwork with 6 letters followed by 2 odd digits between 0 and 9 inclusive. If…

A: The answer is attached below,

Q: c. Find the marginal d. Find the marginal density g(x). density h(y).

A: here given joint distribution of x and y  f(x,y) = 1.5 (x2 + y2)  , 0≤x, y ≤10…

Q: Pyramid Lake is on the Paiute Indian Reservation in Nevada. The lake is famous for cutthroat trout.…

A: "Since you have posted a question with multiple sub-parts, we'll solve the first three sub-parts for…

Q: 1. A total of 3759 individual were interviewed in a public opinion survey on a political proposal.…

A: Given that: Total number of individuals got interviewed: 3759 Total number of men: 1872 Total number…

Q: is long. Suppose an antiquities store in Athens has a very old manuscript that the owner claims is…

A: The hypothesized proportion value is 0.214.

Q: A study of life expectancy showed that a random sample of 6 states had a standard deviation of 1.4…

A: Obtain the 98% confidence interval for the population variance. The 98% confidence interval for the…

Q: In the fall semester of 2019, Mrs. Osborne taught Math 123 online. The table below gives the scores…

A: Given: Sample size n1 = 8 Sample Size n2 = 8 α=0.05 Formula: x=∑i=1n=x1n Test Statistic formula is…

Q: If you are willing to run out of cash for 10% of the days, how much cash should you put in the ATM…

A: c) From the information, observe that the following ascending ordered data. 55, 62, 63, 64, 68, 69,…

Q: A real estate agent suggests that the median rent for one- bedroom apartment in a community is $325…

A: The following data has been given: 420,460,514,405,320,435,350,531,450,560,309,325

Q: Construct a grouped frequency distribution for the data. Use the classes 19-28, 29-38, 39-48, 49-58,…

A: Answer:

Q: A personnel director in a particular state claims that the mean annual income is greater in one of…

A: Given:A personnel director in a particular state claims that the mean annual income is greater in…

Q: Group A is a sample of 15 people Group B is a sample of 15 people What are the degrees of freedom…

A: Givensample size(n1) for Group A = 15sample size(n2) for Group B = 15

Q: Let X denote the number of times a certain numerical control machine will malfunction: 1, 2, or 3…

A: Given data is f(x,y) y 1 2 3 Total x 1 0.10 0.05 0.02 0.17 2 0.10 0.35 0.05 0.50 3 0.03…

Q: Touchdowns and QB Ratings Listed below are the number of touchdown passes thrown in the season and…

A: From the provided information, Sample size (n) = 7 TDs 34 21 15 22 34 26 23 QB…

Q: the least likely to result in a decrease in the margin of error?

A: here given , A sample is used to construct a confidence interval for an unknown population…

Q: a club consists of 5 men and 4 women. in how many ways can this club elect a president, Vice…

A: Given data A club consists of 5 men and 4 women

Q: Suppose for a sign test, there are 8 plus signs, 3 negative signs and 1 zero. A. What would be the…

A: The following information has been given: The number of positive sign X+=8. The number of negative…

Q: 1.  Assume that thermometer readings are normally distributed with a mean of 0 degrees C and a…

A: Given that  μ = 0 degree celsius ? = 1.00 degree celsius By using standard normal distribution we…

Q: The breaking strengths of cables produced by a certain manufacturer have historically had a mean of…

A: The provided information is x¯=1756σ=50n=90α=0.05The null and alternative hypothesis is…

Q: Testing: H0:p=0.95H0:p=0.95 H1:p>0.95H1:p>0.95 Your sample consists of 87 subjects, with 79…

A:

Q: the average grade is 84 with a standard deviation of 4. What is each grade for -1 2 0 1.5 -1.25

A: Given Mean μ=84Standard deviation σ=4 The formula for Z score isZ=X-μσX=Z×σ+μ

Q: At a .01 significance level with a sample size of 80, find the critical value for the correlation…

A: Given that  Sample size n =80 Level of significance α=.01

Q: rticular fruit's weights are normally distributed, with a mean of 515 grams and a standard deviation…

A: Given data,Mean μ=515sd     σ=26P(488<X<506)=?

Q: 1. Let X denote the number of times a certain numerical control machine will malfunction: 1, 2, or 3…

A: f(x,y) y=1 y=2 y=3   Total x=1 0.10 0.05 0.02 0.17 x=2 0.10 0.35 0.05 0.5 x=3 0.03 0.10…