M1= 37 SS1=360 n1=11 M2= 43 SS2=576 n2=10 Assume two failed test and alpha= .05 What is the t value?

Q: The probability that a student has a visa card (EVENT V) IS 77. The probability that a student has…

A: Given: P(EVENT V) = 0.77 P(EVENT M) = 0.15 P(Both) = 0.06 Formula Used: PA∪B = P(A) + P(B) - PA∩B

Q: Suppose you flip three coins. What is chance of not getting tails on all three flips?

A: Given that, three coins are tossed,  We have to find the chance of not getting tails on all three…

Q: How is it that estimates of variance can be used to test a hypothesis about means?

A:

Q: If Cov(X,Y) = 808, then what is Cov(10X,4Y)?    If Cov(X,Y) = 100, then what is Cov(2X, 10Y)?…

A: Since we know that Cov(aX, bY ) = ab Cov(X,Y )

Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

A: let X: The lengths of the steel rods.X has normally distributed.X~N(μ,σ)where mean(μ)=148.4 cmand…

Q: When women were finally allowed to become pilots of fighter jets, engineers needed to redesign the…

A: Given that  Mean = 162 , Standard deviation = 44 P(150 < X < 221)

Q: The Australian sheep dog is a breed renowned for its intelligence and work ethic. It is estimated…

A: Given n=14 P=0.45

Q: A real estate agent would like to predict the selling price of a single-family house by predicting…

A:

Q: OCX hapter 12: Test of Independence 11. Airline Ticket Purchases for Domestic and International…

A: First we state the hypothesis for the above question. H0: Type of ticket purchased is independent of…

Q: Example 1.15 You know that a certain letter is equally likely to be in any one of three different…

A:

Q: Suzie

A:

Q: A distribution of values is normal with a mean of 150 and a standard deviation of 15. From this…

A: given data  normal distributionμ = 150σ = 15n = 23 for middle 58% of sample means,  P(-Z<x¯<Z)…

Q: Using the formulas, calculate the (i) mean and (ii) standard deviation of X. Use your calculator to…

A:

Q: Refer to the accompanying scatterplot. a. Examine the pattern of all 10 points and subjectively…

A: Given is the data on two variables and we need to calculated correlation b/w them. Note that I used…

Q: First Quiz (Q1) 14 15 8 23 24 Q2 25 26 28 30 t the points in the grid below, then sketch a line that…

A: From the above data The independent variable X is First Quiz  And the dependent variable Y is Second…

Q: Use the pizza cost and the subway fare in the table below to find the regression equation, letting…

A: Followings are the Explanation of the question  Use the Linear regression  Linear Regressions:- 1)…

Q: QUESTION 4 In a random sample of 92 ears of corn, farmer Carl finds that 7 of them have worms. He…

A: Given,n=92x=7

Q: Given this information, what is the test statistic for testing whether the two population means are…

A: The given data reflect sample data for a random sample of balls of each brand.

Q: A random sample of 25 statistics students was asked: "Have you smoked a cigarette in the past week?"…

A: From the provided information, Sample size (n) = 25 Six students reported smoking within the past…

Q: Three unbiased coins are tossed.What is the probability of getting at least 2 heads?

A:

Q: Has To answer that question, we consider the Cherry Blossom Race, a 10-mile race ru Washington D.C.…

A: note that,  population standard deviation is known.

Q: EXAMPLE 6.16 A self-service store employs one cashier at its counter. Nine customers arrive on an…

A: Given:-             Arrival rate = λ = 95                                      = 1.8 customers /…

Q: How do you interpret a coefficient of determination, r2,  equal to 0.80? Answer: r2 = 0.80 can be…

A: given data  coefficient of determination, (r2) =  0.80 we have to interprete coefficient of…

Q: You decide to record the hair colors of people leaving a lecture at your school. What is the…

A: Given information- We have given the record of hair colors of people leaving a lecture at your…

Q: How to do this graph by using linear regression in R?

A: Let's Change the given data set as follows: x y 1 52254 2 54884 3 51869 4 29743 5…

Q: Example 8.10 Suppose that a market research firm is hired to estimate the percent of adults living…

A:

Q: amount of honey produced by local beekeepers is normally distributed with a mean of 140 pounds and a…

A: given data, normal distribution mean=140standard deviation=31smallest amount in the top 14% produced…

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

A: given data normal distribution μ = 150σ = 58n = 48

Q: Number of Farms A random sample of the number of farms (in thousands) in various states follows.…

A:

Q: 50 tickets numbered A bag contains 1,2,3,4......50 of which five are drawn at random and arranged in…

A: From the provided information, A bag contain 50 tickets numbered 1, 2, 3, ........., 50. Five…

Q: . The total number of hours, measured in units of 100 hours, that a family runs a vacuum cleaner…

A:

Q: Before every flight, the pilot must verify that the total weight of the load is less than the…

A: Givensample size(n)=39Mean(μ)=182.3 lbstandard deviation(σ)=39.6 lbThe aircraft will be overloaded…

Q: A core assumption of linear regression is that the dependent variable and independent variables…

A: Log transformation is kind of taking log of given data to gain normality.

Q: A leading magazine (like Barron's) reported at one time that the average number of weeks an…

A: given data normal distribution μ = 30σ = 7n = 36

Q: The mean height of an adult giraffe is 17 feet. Suppose that the distribution is normally…

A: given data  normal distribution μ = 17σ = 0.9

Q: A box contains 10 bulbs, of which just three are defective. If a random sample of five bulbs is…

A: Given,no.of defective bulbs=3no.of non defective bulbs=7Total no.of bulbs=10

Q: A study is conducted to see if the presence of physical recreation related infrastructure (e.g.…

A: Cohort study: In this type of study, a group of subjects called cohort is studied to find out…

Q: x ht In ment #3 T....docx He Ge P 12-22 (14e) A Pa…

A: Solution : The null and alternative hypothesis test  Ho : p1=0.24, p2=0.13, p3=0.20, p4=0.16,…

Q: the accompanying table lists the numbers of words spoken in a day by each member of 56 different…

A: Please find the explanation below. Thank you.

Q: Write out the Sample Spuces given. expirment use the letter. It to indicare heads and I for tails 3…

A: Given The possible outcomes of a single coin toss is either head or tail. Here, H stands for…

Q: Weights of Elephants A sample of 7 adult elephants had an average weight of 11,640 pounds. The…

A: GivenMean(x)=11640standard deviation(s)=23sample size(n)=7confidence level=90%

Q: 50 tickets numbered : A bag contains 1,2,3,4......50 of which five are drawn at random and arranged…

A:

Q: When the relationship between two variables is perfect and inverse, what is the value of r?   a.…

A: given data  we have to find correct answer from given options.    When the relationship between two…

Q: Construct 95% confidence for the population point estimate (sample proportion) which is given as…

A: Given  N=40, P=0.4  Level of significance=0.05

Q: Acceleration Time. Suppose the number of seconds required to accelerate to 60 mph depends on both a…

A: On the basis of the above output the intercept value is 25.41936066 that means if other factors are…

Q: psychologist would like to estimate the proportion of Americans that say "the future of the nation…

A: Given that  n = 784 , p = 59.3% = 0.593 96% confidence interval

Q: A company produces machined engine parts that are supposed to have a diameter variance no larger…

A:

Q: Calculate the cumulative distribution function of a random vari- able uniformly distributed over (a,…

A:

Q: A frequency table displaying professor Blount's last statistic test is shown. Find the best estimate…

A:

Q: Students want to study the propotion of people in their university community who have tested…

A: given data, n=780x= no. of positive =x=516CI=0.99α=1-0.99=0.01