A multiple choice test has 10 questions each of which has 4 possible answers, only one of which is correct, if Judy, who forgot to study for the test, guesses on all questions, what is the probability that she will answer exactly 3 questions correctly? (hint: Binomial Distribution) 0.5006 0.0021 0.0156 0.2816 0.2503

Q: Based on the data shown below, calculate the regression line (each value to one decimal place) ý = X…

A:

Q: Construct a 99% confidence interval of the mean drive-through service times at dinner for Restaurant…

A: From given we have : n=50 Restaurat X 81 123 120 145 265 184 126 149 161 109…

Q: You are playing a card came, and the probability that you will win a game is p = 0.88. If you play…

A: Given n=601, p=0.88

Q: Below is a scatterplot of data that students collected concerning the relationship between the cost…

A: In scatter plot data points are too much scattered. We have to tell correlation coefficient:

Q: a) What proportion of our sample will NOT be categorised as severely hypertensive? b) Suppose that…

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

Q: ssume that the Richter scale magnitudes of earthquakes are normally distributed with a mean of 1.157…

A: Given that μ=1.157 & σ=0.532

Q: Heart Rates For a certain group of individuals, the average heart rate is 74 beats per minute.…

A:

Q: 25. Suppose that a researcher is int researcher expects a treatment. population, the mean adult bod…

A:

Q: Suppose that the length X of the life (in years) of a battery for a computer has a distribution that…

A:

Q: X is a normally distributed variable with mean μ = 35 and standard deviation σ = 5. Find a) P(x 21)…

A: Given problem Given that   X is a normally distributed variable with mean μ = 35 and standard…

Q: b. Find the mean and standard deviation of the resulting distribution of sample means for n = 64.…

A: Given that  X ~ Uniform (1 , 12) Mean of X = 6.5 Standard deviation of X = 3.452

Q: 9 -n 10 K Listed below are the amounts of net worth (in millions of dollars) of the ten wealthiest…

A: Given that  Data X:  265, 206, 185, 169, 163, 154, 148, 148, 148, 143

Q: Managers of an outdoor coffee stand in Coast City are examining the relationship between (hot)…

A: Given: n = 16 Formula Used: Slope b = n∑XY-∑X∑Yn∑X2-∑X2

Q: (b) Find the probability that the student is in ourth grade. The probability that the student is in…

A: It is given that the grade of students from 1 to 8 and frequency of each grade.

Q: explain the logic of one-sided and two-sided significance tests and the scientific advantage of…

A: The objective is to explain the logic of one-sided and two-sided significance tests.  To compare the…

Q: Let X be the amount of time (in hours) the wait is to get a table at a restaurant. Suppose the cdf…

A: Formula  For continuous distribution P(a≤x≤b)=F(b)-F(a)

Q: ) What is the t-critical value(s)?  b) What is the estimated standard error? c) Compute the…

A:

Q: In a completely randomized experimental design, 11 experimental units were used for each of the 3…

A: Given a=3, b=11

Q: Consider that blood pressure readings are obtained from nearly 200,000 participants in a a…

A: It is given that  Mean, μ = 90 Standard deviation, σ = 13

Q: Assume that we want to construct a confidence interval. Do one of the​ following, as​ appropriate:…

A: From given data we have  n=55 Since n>30, we can assume normality by central limit theorem.

Q: d. When the number of trials for a binominal distribution application becomes large, would…

A: Given that When the number of trials for a binominal distribution application becomes large, would…

Q: The lifetime of a certain brand of electric light bulb is known to have a standard deviation of 46…

A:

Q: ONLY need D and E

A: Given that  X ~ Uniform (84 , 107)

Q: Given a standardized normal distribution (with a mean of 0 and a standard deviation of 1), complete…

A: given data Z~N(0,1)standard normal distribution

Q: Male (M) Female (F) Total Color-Blind (C) Not Color - Blind C Total 45 108 14 67 59 175 63 53 116 A…

A: P(A given B) = P(A|B) = P(A and B)/P(B) Total = 175 Male = 108 Female=67 Colour blind=116 Not colour…

Q: Records show that the average number of births at Highland Hospital per hour is 8.1. Find the…

A: It is given thatthe random variable X i.e,  the number of births follows Poisson distribution with…

Q: A data set includes weights (in grams) of 32 Reese's Peanut Butter Cup Miniatures. The accompanying…

A: Given that  n = 32 , Population Mean = 8.953 Claim : The sample is from Population with mean equal…

Q: The accompanying dataset shows the monthly number of new car sales in the last three years. Develop…

A: Multiple linear regression, commonly referred to as multiple regression, is a statistical method for…

Q: 2. The lengths of two different types of snakes are being compared. A sample of 12 Type A snakes was…

A:

Q: For a sample of size 36, the standard deviation of the sample mean is 50. In order to cut this…

A: Sample size (n)= 36 Standard deviation = 50   Now,   If standard deviation = 20  Sample size = ?

Q: psychologist is studying the self image of smokers, which she measures by the self-image (SI) score…

A: Given that  ? = 80 , E = 20 99% confident

Q: 2 9.5 points eBook Print References For each value of d.f. look up the value of Student's t in…

A:

Q: Fish weights: A fish hatchery raises trout to stock streams and lakes. The weights, in ounces, of a…

A: The data shows the weights of a sample of 18 trout at their time of release.

Q: We want to conduct a hypothesis test of the claim that the population mean germination time of…

A:

Q: Use a 0.05 to test for any significant differences. State the null and alternative hypotheses. O Ho:…

A:

Q: Year t-test 1960 1970 1980 1990 2000 2005 2010 2011 2012 2013 2014 2015 Discarded Metallic Waste 0…

A: Given t test=0.2905547  tcritical=2.201

Q: A life insurance company wants to estimate the probability that a 40-year-old male will live through…

A: Given problem Given that   A life insurance company wants to estimate the probability that a…

Q: Groups of adults are randomly selected and arranged in groups of three. The random variable x is the…

A: We have given the following probability distribution table x P(x) 0 0.358 1 0.448 2 0.168…

Q: The claim is that for 11 AM body temperatures of females, the mean is less than 98.6°F. The sample…

A: From the provided information, Sample size (n) = 37 The claim is that the mean is less than 98.6 F.…

Q: 3. Let X be the weight (in pounds) of pumpkins grown in a certain county (county A) in Kentucky.…

A: Given          n=9        σ2=1.0         α=0.10 The formula for sample standard deviation is,…

Q: A factorial experiment involving two levels of factor A and three levels of factor B resulted in the…

A:

Q: According to a study, 74.9% of college freshmen majoring in business said that "to get training for…

A: The value of n is 9 and the value of p is 0.749.

Q: 1)In a cross-tabulation or contingency table examining the relationship between breed of dog and…

A: Given,. 62 percent dogs were qualified in a test.  And  the data is taken for 6 breed of dogs,.  The…

Q: Find each probability for a trial that has P(s) = .47  Write probability answers as 2-decimal…

A: P(s) = 0 .47 x = no. of succeses in 12 tires n= 12  P(x=X) = nCxPxqn-x   _____ binomial distibution

Q: Find the z-score for which the area under the standard normal curve to its left is 0.96. 1.82 -1.38…

A: From the given information, the random variable Z be the standard normal variate. The standard…

Q: Problem 4) Select integrated circuits, test them in sequence until you find the first failure, and…

A: Given that, N denotes the number of tests to find the first failure. The probability of failure is…

Q: Assume that the Richter scale magnitudes of earthquakes are normally distributed with a mean of…

A: Given  information: μ=mean=1.157σ=standard deviation=0.532 Let us denote X as the magnitudes follows…

Q: Assume that the heights of men are normally distributed with a mean of 69.5 inches and a standard…

A: It is given that  Mean, μ = 69.5 Standard deviation, σ = 2.1 Sample size, n = 36

Q: Suppose a life insurance company sells a $160,000 1-year term life insurance policy to a 20-year-old…

A:

Q: X         0         1          2         3        4          5 P(X)    0.4    0.25      0.15…

A: