Which of the following is NOT CORRECT?

Q: In a survey of women in a certain country (ages 20-29), the mean height was 64.6 inches with a…

A: Answer:- Given, mean , µ = 64.6 inches. Standard deviation, σ = 2.65 inches.  Let, X = Height of…

Q: A confidence interval for a population mean has length 24. a) Determine the margin of error.…

A: Answer: From the given data, confidence interval for a Population mean has length =24

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: Let x1=number of people over the age of 55 dream in blank and white n1=297, x1=80 x2=number of…

Q: For students who first enrolled in two year public institutions in a recent semester, the proportion…

A: (a) State the hypotheses. There is no evidence to conclude that the proportion of students who…

Q: Determine the two z-scores that divide the area under the standard normal curve into a middle 0.46…

A: Solution-: Given: Middle standard normal curve =0.46           Two outside curve =0.27 We have to…

Q: Suppose that (Y, X) satisfy the assumptions specified here. A random sample of n = 455 is drawn and…

A: The specified regression line is:  Y^=6.38+5.84X        2.9    2.2 From the above, the standard…

Q: Approximately what percent of observations in the distribution lie between 144 and 164? (b)…

A: A Normal distribution has a mean µ = 154 and standard deviation σ = 10. As per 68-95-99.7 rule 68%…

Q: Find the value of *)") for each of the following cases: (a) The events A, B, C are disjoint events…

A: Use the formula P(A∪B∪C)=P(A)+P(B)+P(C)-P(A∩B)-P(A∩C)-P(B∩C)+P(A∩B∩C)

Q: Many people believe that the average number of Facebook friends is 125. The population standard…

A: Answer  Given  Sample size [n] = 49 Standard deviation [s] =36.8 Sample mean [x] =146 level of…

Q: A marketing specialist wants to estimate the average amount spent by visitors to an online…

A: In the field of marketing, it is crucial to understand the behavior of customers to design effective…

Q: What is the equation for the line of fit? y=-³x+26 y = -x +32 y = -x +30 Based on this data, which…

A: Here  Take x = hours practiced per week y = missed free throw in percentage

Q: It is recommended to use a t-test to perform a hypothesis test for more than two groups. True False

A: A t-test is typically used to compare the means of two groups. When there are more than two groups,…

Q: Below is a chart that shows the previous 4 periods of pancake sales for Steve's diner. Period 1 2 3…

A: The data for the previous 4 periods of pancake sales is given.

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

A: Answer: From the given data, Margin of error (E) = 2% = 0.02 Prior estimate is not known, in this…

Q: The table lists the number of head and neck injuries for 643 ice hockey players wearing either a…

A: The question is about events Given : Total no. of players ( N ) = 643   To find : a ) C ∩ F…

Q: 95% confidence interval of a population proportion is (0.72,0.93) What is the margin of error (round…

A: Answer: From the given data, 95% confidence interval for a population proportion is (0.72 , 0.93)…

Q: With hypotheses H0:P≤0.5 vs H1:P>0.5, what is/are the critical value(s)? (Report answer accurate to…

A: Let p be the population proportion of heads. Given that, p = 0.5 x = no. of heads = 65 n = sample…

Q: Let's assume that 6 weeks old golden retriever puppies' weights are normally distributed with a mean…

A: Answer: From the given data, Let X: Weight of puppies Mean μ = 8.1 Pounds Standard deviation σ = 1.3…

Q: A Normal distribution has mean µ = 21 and standard deviation o = 3.2. Find the following. (a) the…

A: The population mean is 21 The population standard deviation is 3.2 We have to find the percentage of…

Q: A researcher is interested in examining whether self-affirming oneself leads to increases in…

A: The spread of the data set was obtained by subtracting the maximum and minimum values. It is also…

Q: Determine P(B|A), If A and B are the events with P(A) = 0.34, P(B) = 0.26 and P(AUB) = 0.49

A: Answer: From the given data, P(A) = 0.34 P(B) = 0.26 P(A∪B) = 0.49

Q: Out of 890 families with 5 children each, How many you expect to have a) 3 boys

A: Answer: From the given data, Sample size(n) =5  The probability that a child is boy or a girl is…

Q: Question 12 Answer the following questions related to the following dendrogram. 1. Draw the nested…

A: Dendrogram :  It is the diagram which represents in a tree format which represents the arrangements…

Q: (a) Compute a 95% confidence interval for µ, the population mean reaction time for women who have…

A: Let μ be the population mean reaction time for the population of women of the age group. No. of…

Q: Construct the confidence interval that could be used for the hypothesis test described in part​ (a).…

A: The mean difference is -1826.388 and standard deviation is 9871.8991. The sample size is 8.

Q: 5) Alcohol consumption is influenced by price and packaging, but what about glassware? Atwood et al.…

A:

Q: The raw data gathered on a university campus from a survey of art degree majors and their residency…

A: All the outcomes of an experiment are known as events. The likelihood of an event happening is known…

Q: If we want to compare if more women smoke than men, which test should we use? Single sample z-test…

A: If we want to compare if more women smoke than men, which test should we use? Single sample z-test…

Q: the equation sleep = 3,638.25 - .148 totwrk -11.13 educ + 2.20 age              (112.28)      (.017)…

A:

Q: Several years ago, 33% of parents who had children in grades K-12 were satisfied with the quality of…

A: The formula for the confidence interval for the proportion is, Here, confidence level is 0.90. Use…

Q: A and B are independent events P(A) = 0.25 and P(A and B) = 0.14 then, find P(B) ?

A: Answer: Given that, A and B are independent events P(A) = 0.25 P(A and B) = 0.14

Q: Use the Shapiro-Wilk test to check the normality assumption for the variable Starting_Sal. According…

A: p-value = 2.856e-15

Q: Determine the sample size needed to construct a 95 % confidence interval to estimate the population…

A: Answer: From the given data, Estimate of population proportion = p = 0.34 Margin of error (E) = 0.06

Q: Fourty percent of the students in a class of 100 are planning to go to graduate school, Find the…

A: Answer: From the given data, Sample size(n) = 100 Probability of students planning to go to graduate…

Q: Residuals in a regression model: (pick one or more) * A) Represent the differences between observed…

A: The regression model shows a relationship b/w 1 dependent variable and 1 or more independent…

Q: Determine the sample size needed to construct a 95 % confidence interval to estimate the population…

A: Given data P= 0.34 E= 0.06

Q: On the previous Monday, for the population of all customers, 50% of people preferred pepperoni, 25%…

A: The three categories are cheese, pepperoni, and veggies. The output of the Chi-square test is given.…

Q: For the provided sample mean, sample size, and population standard deviation, complete parts (a)…

A: Sample size n=25 Sample mean x¯=31 Population standard deviation σ=8

Q: For a confidence level of 88%, find the critical Z-value using the standard normal table.

A: Answer: From the given data, 88% confidence interval, The critical Z value is,

Q: Let w₁, W2, ..., wt be independent random variables from a normal distribution with mean 0 and…

A: due to Bartleby policy I can solve only 3 subpart of the question (a) The expected value of   xt…

Q: Find the z-score such that the area under the standard normal curve to the left is 0.39. is the…

A: According to the given information, we have P-value = 0.39 and Left tailed.

Q: You may need to use the appropriate technology to answer this question. The following table contains…

A: The table contains observed frequencies for a sample of 200.

Q: The Toyota Camry is one of the best-selling cars in North America. The cost of a previously owned…

A: Independent variable: Miles ( 1000's)  Dependent variable : Price ($1000's)

Q: Alexandre Ricard 27:38 2. Jordan Guenette 28:07 3. Andrew Barrington 29:17 4. JoelDeschiffart…

A: Alexandre Ricard 27.38 Jordan Guenette 28.07 Andrew Barrington 29.17 Joel Deschiffart 29.45…

Q: Assume we found a 98% confidence interval for the true difference in proportions of those who…

A: The information provided in the question are as follows : The 98% confidence interval for the true…

Q: A teacher claims that over 14% of maths students are married. In the suevey at the beginning of…

A:

Q: A researcher records age in years (x) and systolic blood pressure (y) for volunteers. They perform a…

A: The regression equation is y^=4.5+14.4x. To test whether a linear relationship exists between x and…

Q: Suppose that you take 1000 simple random samples from a population and that, for each sample, you…

A:

Q: MJ Logistics has decided to build a new warehouse to support its supply chain activities. They have…

A: /--------- Large Warehouse (High Volume) : 27…

Q: The data in the table is the number of absences for 7 students and their corresponding grade. 3 5 5…

A: Number of Absences, x Grade, y 0 3.8 2 3.7 3 3.5 5 2.4 5 1.7 6 1.7 7 1.5