A researcher hypothesizes that there is a positive correlation between the hours spent studying and the final exam score. They collect data from 20 students and compute the Pearson correlation coefficient, r, to be 0.75. Using a significance level of 0.05, test the hypothesis that there is a significant correlation between the hours spent studying and the final exam score.

Q: Set A = {4,6,7} Set B = {1,5, 7, 8, 10} Set C = {3,6,9,10} LIST the elements in the set AnBnC:…

A: We have given information, The sets are, A=4, 6, 7 B=1, 5, 7, 8, 10 C=3, 6, 9, 10

Q: A student has a test score of 48.4 on a test having a mean of 66 and a standard deviation of 11. A.…

A: given data μ = 66σ = 11x = 48.4

Q: Suppose we are interested in bidding on a piece of land and we know one other bidder is interested.…

A: let X is uniformly distributed between a  and b then the probability density function at x is…

Q: What does brand loyalty mean to consumers? According to a recent research report, 37% of consumers…

A:

Q: Wiyot inspects a batch of products by sampling 4 of them without replacement. If at least one of the…

A: Here they gave a group of 100 products and out of them 14 are defective hence there will be = 86 non…

Q: The hip width x of adult females is normally distributed with mean 38.3 cm and standard deviation…

A:

Q: A housing development can only build on a certain plot of land if can show that the average level of…

A: From given we have data set : 16,50,35,80,15,27,99,68,11,98,34

Q: 7. The null and alternative hypotheses For each pair of hypotheses that follows, decide whether Ho…

A: A null hypothesis H0 is a statement of no difference between a population parameter and hypothesized…

Q: I have a dataset of survey. how do I use logistic regression method to identify which variables are…

A: From the given information, The dependent variable is Satisfied. Independent variables: Rip Type…

Q: A college student has 7 days remaining before final examinations begin in her four courses, and she…

A: Let xn  be the number of study days allocated to course n, Pn( xn )be the number of grade points…

Q: A factory received a shipment of 19 lightbulbs, and the vendor who sold the items knows there are 4…

A: Here the given information is A factory received a shipment of 19 lightbulbs, and the vendor who…

Q: You probably visit the same news websites each day for your news and these sites may be very…

A: In the context of news sources, this means that we are more likely to rely on news sources that…

Q: If a population exhibits a skew of -0.38 and a kurtosis of 2.54 which of the following is true? The…

A: The population skewness value is given as -0.38, and the population kurtosis value is given as 2.54.…

Q: The data presented is a multiple logistic regression analysis and the models are shown below. In the…

A:

Q: Using your completed chart, what percent of the the total number of vehicles over the 6-month period…

A: Objective of this question is that Using your completed chart, what percent of the the total number…

Q: What sample size might be better and why- 3 or 300? For the above problem, if the overall score of…

A: Examining the academic achievement of a group of third graders at a nearby school in social studies.…

Q: Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed…

A: Given: Mean μ=117 Standard deviation σ=11 A Z-score is a measure that indicates how many standard…

Q: At a movie festival, a team of judges is to pick the first, second, and third place winners from the…

A: pick first , second and third place winners from the 57 films entered. no. of ways to choose first…

Q: a) If we expected an increase in sample B, what are the results of the test of significance? (THINK…

A:

Q: What does the regression line represent?

A: Given Information: The information regarding the regression line.

Q: Which of the following best describes what a Z score corresponding to a value in a data set…

A: The correct answer is: The Z score indicates the value's difference from the mean relative to the…

Q: imagine a hypothetical future in which we have geolocation data on all people in a city and complete…

A: Given information: The total number of hospital visits was 104000, and the size of the city is 20000…

Q: In this question you will consider properties of sample estimators in time series context and…

A: Given T=15 samples from a time series  y1, . . ., y15=-0.92, 1.08, 0.20, -0.63, 1.36, 1.33, -1.06,…

Q: 1. If you draw a card with a value of five or less from a standa you $7. If not, you pay me $7.…

A: 1) Answer:- We know that, In standard deck total cards = 52  Number of cards in a standard deck with…

Q: he number of pairs of dress shoes owned by men is a discrete random variable with the following…

A:

Q: A study examined bone strength. Cadaveric femurs from subjects in three age groups were collected:…

A: Given data:

Q: Number out of service  Frequency  0 8 1 48 2 83 3 128 4 74 5 11 6 9 7 3 8 0 9 1     The transit…

A: Given that: Number out of service  Frequency  0 8 1 48 2 83 3 128 4 74 5 11 6 9 7…

Q: sample standard deviation for the following scores: -8, 4, -7, 6, 8, 5, -7, -9, -2, 0

A: X is a discrete variable . The sample standard deviation is a measure of dispersion which is…

Q: The null and alternative hypotheses for a population proportion, as well as the sample results, are…

A: given data  hypothesis : H0 : p = 0.6H1 : p > 0.6n =80x = 52p^ = xn = 5280 = 0.65

Q: univariate normal distribution using maximum likelihood estimation: max² Σlog p(x₁;μ, ²). Show that…

A: Given  N=Number of observation Xi~N(μ,σ2); i=1,2,...,N

Q: Determining the proportion of males in a population (i.e., the sex ratio) is a task commonly…

A: Given that Determining the proportion of males in a population (i.e., the sex ratio) is a task…

Q: 2, A professor of statistics claims that her students take 45 minutes to complete her exams. You…

A:

Q: Consider a situation where you have a parental cross with the mother and father phenotypes listed…

A: Given Two randomly selected individuals are selected and mated to produce a set of F2individuals and…

Q: 5. Let X be a random sample from Ge(p). Find the MLE for p.

A:

Q: Calculate cov(X, Y) (2 decimal places)

A: Given that, the join PMF of (X, Y). The possible values of X are 1,2,3. The possible values of Y are…

Q: Find the following probabilities p(z-0.15)

A: The objective is to find the area (in terms of probability) for a certain area that is defined…

Q: In a poll of 125  randomly selected U.S. adults, 63  said they favored a new proposition. Based on…

A: given data sample size (n) = 125favorable outcomes (x) = 6395% ci p.

Q: What is the ratio of the total jobs at risk in Transportation and Storage to those at riks in…

A: From the above two graphs we have to find the ratio of the total jobs at risk in Transportation and…

Q: Create a study that test factors that affect a students mental health.     Purpose is to identify…

A: Given that, The variable of interest is factors that affect a student's mental health. The null…

Q: A manufacturer produces humidifiers that have a mean life of at least 18000 hours when the…

A: The question is about normal distribution Given : Popl. mean life ( μ ) = 18000 hrs. Pop. std.…

Q: Let's investigate this Spotify question for a second time in this problem set. You run the following…

A: From the given data we have, • On average, faster songs are more danceable.• On average, faster…

Q: Empirical Rule: 4-30 μ-20 MEMORIZE THIS!!! μ-0 - 68% of the data → 95% of the data -99.7% of the…

A: The graph is about empirical rule.

Q: Construct the confidence interval for the population variance for the given values. Round your…

A: From the provided information, n = 24 s2 = 3.9 and c = 0.99

Q: At a lottery, 51 tickets were sold and three prizes are to be given. a. How many possible outcomes…

A: 51 tickets were sold and three prices are to be given.  we have to find no. of possible outcomes for…

Q: Check here for instructional material to complete this problem. K Use the slope formula to find the…

A: Om sairam

Q: Given the simple regression analysis results shown below, find the 99% confidence interval and 99%…

A: The given regression equation is y^=7+15x, the remaining values are se=10.14,x¯=7,n=22 and…

Q: 8. In an Oreo factory the mean mass of a cookie is given as 40 g. For quality control the standard…

A:

Q: Please help solve the problem provided below

A: Given a manufacturing station, which can be in 2 conditions, either "up" or "down" Xn=Number of…

Q: The weights of steers in a herd are distributed normally. The standard deviation is 200lbs and the…

A: Answer:- Given , The standard deviation, σ = 200lbs  The mean steer weight, μ = 1300lbs  Using…

Q: Times for a surgical procedure are normally distributed. There are two methods. Method A has a mean…

A: Given information: Method A has a mean of 32 minutes and a standard deviation of 4 minutes, Method B…