Describe a test or measure that is low in reliability. How can you know that it has poor reliability? Would a correlation coefficient for reliability be closer to 1.00 or –1.00 for this test? List some reasons why personality tests can be low in reliability.

Q: If two dice are rolled once at the same time, what is the probability that the sum of the dots…

A: Know that  S={ (1,1) (1,2) (1,3) (1,4) (1,5) (1,6)  (2,1) (2,2) (2,3) (2,4) (2,5) (2,6)  (3,1) (3,2)…

Q: e president of Doerman Distributors, Inc., believes that 28% of the firm's orders come from…

A: given data, p=0.28n=100we have to find out the given probabilities

Q: Fill in all the blanks below to complete the partial Excel output for a linear regression between…

A: Given that  Multiple R = 0.1358 Df(total) = 13 Number of parameters in the model y = a + bx, k = 2

Q: In a study you obtain the following data measuring the aggressive tendencies of some football…

A: a) Suppose μ is the population mean aggressive tendencies of football players.

Q: A company produces widgets with a mean weight of 10 ounces and a standard deviation of 0.5 ounces.…

A: This question presents a scenario where a company produces widgets with a given mean weight and…

Q: 12 A fair coin is flipped three times, resulting in the following 2-8 equally likely possibilities:…

A: “Since you have posted multiple questions with multiple sub parts, we will provide the solution only…

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

A: From the provided information, The histogram shows the salaries of 62 football players. Sample size…

Q: Susan has been on a bowling team for 14 years. After examining all of her scores over that period of…

A: We are given information, Let, X=scores over that period of time The random variable X follows a…

Q: The air pollution, measured by the Air Quality Index (AQI), of the 20 most populated cities in large…

A: Introduction A box and whisker plot is a graphical representation of the 5-no. summary of the data.

Q: 3. a) The Pearson correlation coefficient between two variables say, protein C and protein S is…

A: Given: In this case, Pearson correlation coefficient value is 0.3336.

Q: according to quantcast analytics of crossfit.com, 40% of cross fitters have post graduate degrees.…

A: Given: Population proportion p0=0.4 Sample size n=100

Q: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

A: According to the given information in this question We need to find the following probability

Q: Make a histogram of the probability distribution of X. Describe its shape.

A: The given random variable X is the number that survive to adulthood.

Q: $12 O $4 Figure 1 - CDF of Amount Spent on a Meal at a Diner O $16 cdf $8 1.0 0.8 0.52 What is the…

A: Central tendency is a measure of a variable that clusters around a central value that represents the…

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

A: given data 99% ci for pE = 0.03n = ?

Q: The last Kiss Do people have a preference for the last thing they taste? Researchers at the…

A: Given Information: The probability of preferring the last kiss tasted is p=0.20. X denotes the…

Q: A researcher would like to estimate the proportion of the population that has blue eyes. A random…

A: Given  andom sample (n)=700           x= 279 have blue eyes. P=xn   =279700 =0.39857   90 %…

Q: For the following questions, THERE IS NO NEED FOR EXPLANATION. PLEASE PROVIDE JUST THE ANSWER THANK…

A: We have to determine which statement is true for given situation.

Q: Below is a graph of a normal distribution with mean μ = 1 and standard deviation o=3. The shaded…

A: Given: The first graph indicates a normal distribution with mean μ=1 and standard deviation σ=3. The…

Q: IV: levels of stress DV: self rated anxiety    low stress               high stress 1…

A: Introduction SPSS is a statistical software that helps in analyzing the data using statistical…

Q: Exercise 12. Let X, Y, Z N(0,1) be independent. Determine the distribution, expectation and variance…

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

Q: 2.)A jar contains 2 red, 3 green, and 6 blue marbles. In a game a player closes their eyes, reaches…

A: Given : Total available marbles = 2+3+6 = 11

Q: Consider the following box and whisker plot. Find the indicated values of the represented data. 10…

A: According to the given information in this question We need to identify the median and third…

Q: A simple random sample of 90 items from a population with = 9 resulted in a sample mean of 35. If…

A: The population standard deviation is given as, σ=9. For the considered 90 sampled items (i.e.,…

Q: On a test of motor coordination, the population of average bowlers has a mean score of 24, with a…

A: It is given that: The claimed population mean (i.e., the mean score of the population of average…

Q: Research is conducted regarding the average age at retirement for four careers. A total of 700…

A: The question is about categorical data analysis Given : Test stat ( χ2 ) = 20.771 p value = 0.01371…

Q: An airline developed a regression model to predict revenue from flights that connect "feeder" cities…

A: The regression equation is, Estimated revenue = 81 + 0.3Distance + 1.4Population.

Q: can you redo step 4 without coding it?

A: The obtained mean and standard deviation are 3 and 1.

Q: A professor believes that students at her large university who exercise daily perform better in…

A: The given question is about a professor who believes that students who exercise daily perform better…

Q: Step 2:  Options (Select) (SELECT) 1. ≤, ≥, = (SELECT) 2. not valid, valid (SELECT) 3. left skewed,…

A: Here we have to solve step 2 only By central limit theorem we know that when n is large i.e n ≥ 30…

Q: Exercise 13. Let X₁, X₂₁~ N(H₂,o2) i.i.d. and Y₁,...,Y~N(₂, ²) i.i.d. with known o². We assume that…

A: Given  Xi~N(μx,σ2)  ,Yi~N(uy,σ2)Corr(XiYi)=12D=Xi-Yi Show Cov(XiYi)=σ22 Determine E(D) and Var(D)…

Q: 4. Sketch a dot plot for the variable Height. Describe the data distribution. 59 60 60 61 61 61 62…

A: Given data :  59 60 60 61 61 61 62 62 63 63 63 63 63 64 65 65 65 66 66 67

Q: The following factors are being considered in identifying the factors that are associated with labor…

A: To use a Likert scale for job satisfaction as an indicator variable, we need to convert the Likert…

Q: A progressive college experiments with matching roommates at random, regardless of gender or how…

A: The question is about conditional probability Given joint prob. distribution :   To find : Knowing…

Q: Consider a sample with a mean of 500 and a standard deviation of 100. What are the z-scores for the…

A:

Q: Exercise 13. Let X₁,..., Xn~ N(x, 02) i.i.d. and Y₁,..., Yn~ N(Hy, 02) i.i.d. with known o2. We…

A: Hi! Thank you for the question. As per the honor code, we are allowed to answer three sub-parts at a…

Q: A certain company produces and sells frozen pizzas to public schools throughout the eastern United…

A: Given data: Year Revenue 1 8.43 2 10.74 3 12.98 4 14.11 5 16.21 6 17.21 7 18.37…

Q: A researcher is examining whether daily exercise influences mood. The researcher assigns n = 27…

A: The sample size for first sample is 27, the sample mean is 23 and sum of square is 182. The sample…

Q: City University has both a men's and women's lacrosse team. Both teams play their games vs. other…

A: A and B are two events such that P(A),P(B)>0. The conditional probability of A given that B has…

Q: As part of a water quality survey, you test the water hardness in several randomly selected streams.…

A: given data   sample size(n) = 23 sample standard deviation(s)  = 12construct 90 % ci for σ and σ2.

Q: Level 3: The percentage of adult height attained by girls who are t years old can be modeled by the…

A: Given that Function P=62+35log(t-4)  Where P is the percent of adult height attained by girls  t is…

Q: Given a sample with a mean of 57 and a standard deviation of 14, find the probability that a…

A: given data, μ=57σ=14probability that a randomly selected value from the sample will be less than…

Q: Suppose you draw an observation (x = 91) from non-std normal distribution, X~N(109,14). We can…

A: Given  X~N (109,14) x = 91 μ=109 σ=14 Find the z score (z)=?

Q: Assume that adults have IQ scores that are normally distributed with a mean of 98.2 and a standard…

A:

Q: A researcher wishes to estimate, with 90% confidence, the population proportion of motor vehicle…

A: given data, confidence interval =0.90α=1-0.90=0.10Z-critical value=?margin of error=Ehere E=3%=0.03…

Q: For the past ten years, the daily high temperature on January 1 in a mountain town (in degrees…

A: We have given the past ten years, the daily high temperature on January 1 in a mountain town (in…

Q: Researchers decide to run a resume-based audit study where they randomize names based on gender…

A: Given that Researchers decide to run a resume-based audit study where they randomize names based on…

Q: Between 47.5 and 52.5 e. Between 50.7 and 51.8

A: Let X follows Normal with parameters: Mean = 50 sd = 12 Sample size (n) = 36 To find the following…

Q: Consider the following time series data. Quarter Year 1 Year 2 Year 3 11 13 14 10 12 Time Series…

A: Given information: Let t=1 for quarter 1 of year 1, t=2 for quarter 2 of year 1,.....t=12 for…

Q: During the past 5 El Nino events, the mean sea surface temperature (SST) in Monterey Bay was 16.5…

A: From the provided sampled El Nino events, it is interpreted that: The sample size, n=5. The sample…