Suppose that 10 countries submit bids for the summer Olympics. The Olympic committee will select 4 finalists out of these 10 countries. In how many ways can the Olympic committee pick these 10 finalists?

Q: A multiple regression analysis between yearly income (y in $1000s), college grade point average…

A: The random variable y is the yearly income  The random variable x1  is the college grade point…

Q: A medical researcher says that less than 75% of adults in a certain country m required to be…

A: A medical researcher says that less than 75% of adults in a certain country think that healthy…

Q: A sample of 8 households was asked about their monthly income (x) and the number of hours they spend…

A: sample size(n)=8 ∑x=324 ∑y=393 ∑(x-x)2=1720.875 ∑(y-y)2=1150 ∑(x-x)(y-y)=1090.5

Q: The data below represents the mean score of students who did the commerce examination at five…

A: Given mean scores for 5 schools are: Number of students (n) Mean score (x) Total score of all…

Q: a test of the hypothesis Ho: μ= 10 versus H₂: μ#10 a sample of n = 50 observations possessed mean x…

A: n =50x¯ =10.7s = 3.1α = 0.01hypothesis : H0 : μ = 10H1 : μ ≠ 10

Q: A national study found that treating people appropriately for high blood pressure reduced their…

A: The probability that people who do not know that they have high blood pressure is 0.5. The…

Q: In the Texas Pick 3 lottery, you can bet $1 by selecting three digits, each between 0 and 9…

A: Here the given information is       In the Texas Pick 3 lottery, you can bet $1 by selecting three…

Q: Scatter plot #a b) Find the estimated regression equation. 4 =B₁ + B₁₂ × make a 9 Based on results…

A: Here dependent variable (y) = weight of fish in gm Independent variable (x) = length of fish in cm…

Q: (2) A single observation of a random variable having a geometric distribution is used to test the…

A: The Neyman-Pearson lemma states that the best critical region of size a for testing a simple null…

Q: Construct the confidence interval for the population mean j. c =0.90, × = 8.3, 0 = 0.6, and n =…

A: c=0.90α=1-0.90=0.10α2=0.05x¯=8.3σ=0.6n=48

Q: 3. Among all users on the app, 20% of MEs are rock music. The app makers want to know what…

A: Part A: To simulate the outcome of several trials, we can use the binomial distribution with n=100…

Q: Suppose that A and B are events, P(A)=0.25 ,P(B)=0.36  and P(A and B)=0.24 Calculate the P(A|B)…

A: Answer: From the given data, P(A) = 0.25 P(B) = 0.36 P(A and B) = 0.24 A and B are two events,

Q: ou are interested in estimating the the mean age of the citizens living in your community. In order…

A: Given 96% confidence level Αlpha=1-0.96=0.04 Critical value Zc= 2.054 Margin of error E=4 using…

Q: U is the set of furniture stores. A is the set of furniture stores that sell mattresses. B is the…

A: U is the set of furniture stores.A is the set of furniture stores that sellmattresses.B is the set…

Q: A fitness trainer is interested in investigating whether ethnicity and the first exercise activity…

A: Cardio Weight machines Free weights Row Total White 84 98 81 263 Hispanic 84 97 98 279 Black…

Q: In the previous year, 40% of women over the age of fifty had regularly scheduled mammograms.…

A: 40% of women over the age of fifty had regularly scheduled mammograms.  Sample size n=450 women.…

Q: manufacturing machine has a 80% defect rate. If 131 items are chosen at random, answer the…

A: Given N=131 P=0.80

Q: A poll is given, showing 30% are in favor of a new building project. If 8 people are chosen at…

A: The information provided in the question are as follows :- Proportion of people in favor of a new…

Q: You suspect minority students are not as supportive of the new principal of a large school because…

A: We have given thatn1 = 56 , x1 = 45n2 = 33,  x2 = 21Significance level (α) = 0.05Now,p̂1 = x1/n1 =…

Q: 1. Determine the missing values (a) - (d) by using the appropriate Art of Stat app.

A: Failure  Success  Total Behavioral Therapy a b 145 Combine Treatment 42 102 144 Medication…

Q: Create a correlation matrix Table in APA style to report the correlations among these variables,…

A: Consider the given SPSS output which shows the correlation among the variables. Consider the given…

Q: Alligators perform a spinning maneuver, referred to as a "death roll," to subdue their prey. In a…

A: That is, there is no evidence to conclude that on average the angle between the body and head of an…

Q: The time it takes me to wash the dishes is uniformly distributed between 11 minutes and 17 minutes.…

A: X~U(a,b) Probability density function pdf of uniform distribution is.  f(x)=1/(b-a)  , a<x<b…

Q: Use the linear regression model yˆ=−21.9x+927.93 to predict the y-value for x=37.

A: The independent variable is x and the dependent variable is y.

Q: c) Assume that E and F are independent events. Show that Ē and F are independent events.

A: c) The events E and F are independent.

Q: what would Z and MOE be ?

A: Here we have to identify the Critical value Z and and Margin of error MOE

Q: A goodness-of-fit-test is always conducted as a A) lower-tail test. B) upper-tail test. C)…

A: The goodness of fit test is also called as the Chi-square goodness of fit test is a statistical…

Q: The average age of a Bunkerhill student is 28 years old with a standard deviation of 4.09 years.…

A: Answer:- Given, The average age of a Bunkerhill student is, μ = 28 years old and standard deviation,…

Q: Table rates but must The local unity company offers an interrup ption at 12:00 noon Thursday. To…

A: Given :  Time Period Monday Tuesday Wednesday Thursday 12-4 am   19291 31209 27340 4-8 am…

Q: Practice 7. The drying time of a certain type of paint under specified test conditions is known to…

A: For the distribution of drying time (in minutes) of paint, the population standard deviation is…

Q: 5. The following scores are from an independent-measures study comparing two treatment conditions.…

A: Treatment I Treatment II 3 3 10 4 7 7 8 4 10 10 12 2 13 5 12 6

Q: 15. The P-value for a hypothesis test is P = 0.033. Do you reject or fail to reject HO when the…

A: given data, p=0.0333α=0.01we have to gave a conclusion for the hypothesis testing.

Q: Ataxd company tests a random sample of 10 steel-bebed radial tires of a certain brand and records…

A: 53000, 69000, 47000, 55000, 57000, 41000, 46000, 68000, 67000, 42000

Q: A. Mean B. Median C. Mode D. Range E. Standard deviation F. Variance

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A random sample of 121 observations produced a sample mean of 33. Find the critical and observed…

A: n=121, x¯=33, σ=9, α=0.01H0:μ=28 versus H1:μ≠28

Q: Coefficients Standard Error t Stat P-value Intercept 396.3787879396.3787879 30.3252606430.32526064…

A: Let x=Month and  y=Sales The ANOVA table is given as follows:   df SS MS   Regression 1…

Q: A medical researcher wants to determine if there is a relationship between the age group in which a…

A: 7) It is needed to check whether there is a dependent relationship between the age and the…

Q: An engineer wishes to determine the width of a particular electronic component. If she knows that…

A: Assume that μ is the population mean width of a particular electronic component.

Q: A) B) C) Approximately what percentage of students scored 45 or less? What is the median mark for…

A: The examination results of 5000 students are analyzed and the following percentiles are…

Q: (b) Show the four-quarter and centered moving average values for this time series. Centered Moving…

A:

Q: HatsforAll, a major producer of hats, hired a research firm to study the demand for its hats. The…

A: b1=-5.8, SEb1=0.8b2=-20.8, SEb2=15.6

Q: Hypothesis test of one mean. 1. An engineer wants to measure the bias in a pH Meter. She uses the…

A: Since you have posted multiple questions, we will provide the solution only to the first question as…

Q: the LA Times has noticed a decline in its finances They decided to find out the key variables that…

A: Consider the given data: Y (Subscription) X1 (Population) X2 (Advert) X3 (Income) X4 (Fam Size)…

Q: The 2008 General Social Survey asked, “What do you think is the ideal number of children for a…

A: Sample size, n=678 Sample mean, x¯=3.22 Sample standard deviation, s=1.99

Q: IV-A 2

A:

Q: Attractiveness of body types has been a large discussion relating to effects on youth and culture.…

A: BMI designed by men n=35x¯=18.85s=1.75S.E Mean=0.277 BMI designed by women n=48x¯=25.860s=4.215S.E…

Q: An education researcher claims that assistants. In a random sample of 600 working college students,…

A: Given: Sample size is N = 600 Hypothesized population proportion (p0) = 4 % = 0.04 Sample proportion…

Q: those states who were born in foreign countries was 6.5% for State A and 1.7% for State B. Find a 99…

A:

Q: Assume we want to roll a roulette wheel multiple times. There are 38 total slots. 18 slots are red,…

A: Total = 38 slots  Red = 18 slots Black = 18 slots  Green = 2 slots   Probability = favorable/total…

Q: Suppose there were 4,065,014 births in a given year. Of those births, 2,081,287 were boys and…

A: Boys=2,081,287 Girls=1,983,727 Total=4,065,014