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When trying to start a new relationship, people want to make a favorable impression. Sometimes they will even stretch the truth a bit when disclosing information about themselves. A study of deception in online dating studied the accuracy of the information given in their online dating profiles by 110 online daters. The study found that 35 of 55 men and 40 of 55 women lied about their weight.
Using the information from question 1, construct a two-way table. Applying the chi-square analysis, test whether the variables "Gender" and "Lying" are independent. State null and alternative hypotheses, report the test statistic, the P-value and summarize the results of your hypothesis test.
What is the standard error of the average house price for a sample of 133 houses? (Use 4 decimals.)
find the area of the shaded region. the graph depcits iq scores of adults and those scores are normally distributed
Explain what dummy variables are and how they can be used to account for seasonality. Give an example of how you might use dummy variables to measure.
1. students take an average of 45 minutes and standard deviation of 8 minutes to complete a certain statistics test. if
A confidence interval estimate for the population mean is given to be (40.45, 49.24). If the standard deviation is 11.159 and the sample size is 35, answer each of the following (show all work):
Construct a hypothetical 95% confidence interval for a hypothetical case
Diastolic blood pressures are assumed to follow a normal distribution with a mean of 85 and a standard deviation of 12.
Heights and weights were recorded in meters and kilograms, respectively. What would be the value of the correlation if the measurements had instead been made in inches and pounds?
Larger sample Suppose that the blood cholesterol level of all men aged 20 to 34 follows the Normal distribution with mean m = 188 milligrams per deciliter.
let x have the density fxx c2x 1 for 0 ? x ? 4 and fxx 0 otherwise where c is a constant.a find the value of c that
Please give step by step solution in detail. Determine if b is a linear combination of the vectors formed from the columns of the matrix A.
Compute lower and upper quartiles of log10-balances? Determine 95% range of the balances in $s? Express in English what the two boundaries mean.
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