ASSIGNMENT From the list below, choose one problem, write it down, and solve it in detail (show all of your steps). You should pick a problem that has not yet been attempted if you can. Label your solution with the corresponding question number. In your solutions, you are only to use the math concepts that […]
For a sample of N = 25 scores, what is the probability that the sample mean will be within 5 points of the population mean?
PSYC 2317: Statistical Methods for Psychology 1. Suppose you have a collection of scores that is normally distributed with μ = 50 and σ = 18, and suppose we draw samples of size N = 36. (a) What proportion of the samples will have means greater than 53?(b) What proportion of the samples will have […]
Discuss the difference between test-retest and alternate/parallel/equivalent forms of reliability. What are the pitfalls of each?
Discussions If the scores from part 1 of Application 5.3.1 were the scores of a class of graduate students in counseling who took a national test of depression, and if the mean of the test nationally were 7, how might you feel if you scored a 17 on this test? Describe the relationship between how […]
Estimate the number of visitors in the sample who actually are looking for the company’s website by giving the mean of the relevant distribution (that is, the expectation of the relevant random variable).
ASSIGNMENT Not all visitors to a certain company’s website are customers or potential customers. In fact, the company’s executives estimate that about 8% of all visitors to the website are looking for other websites. Assume that this estimate is correct and that a random sample of 40 visitors to the website is taken. Answer the […]
What proportion of babies weigh between 10 and 14 pounds? Is it unusual for a baby to weigh more than 17 pounds?
ASSIGNMENT Baby weights: According to a recent National Health Statistics Reports, the weight of male babies less than 2 months old in the United States is normally distributed with mean 11.5 pounds and standard deviation 2.7 pounds. What proportion of babies weigh between 10 and 14 pounds? Is it unusual for a baby to weigh […]
What is the student’s mean score in the class AFTER the final exam? Calculate the normal non-weighted average of the 5 grades and compare to the weighted average in part b.
ASSIGNMENT 1. A student receives test scores of 50, 75, and 90. The student’s final exam score is 82 and homework score is 75. Each test is worth 15% of the final grade, the final exam is 35% of the final grade and the homework grade is 20% of the final grade. a) What is […]
If the simple CAPM is valid, which of the following situations below is possible and why? Consider each situation independently.
ASSIGNMENT Considering the information below, which security would plot above the Security Market Line (SML)? Security CAPM-predicted return Investor’s expected return A 15% 13% B 15% 15% C 15% 17% Group of answer choices Security C Security B Security A If the simple CAPM is valid, which of the following situations is possible and why? […]
Discuss in detail the similarities and the differences among the results of the four hypothesis tests. What are the implications of this study in terms of the pulmonary function of teens?
Forced Expiratory Volume Data Description One measure of forced expiratory volume (FEV) is the amount of air an individual can exhale in the first second of a forceful breath. Bernard Rosner et al. studied the long-term effects of smoking and second-hand smoke.1They also measured the FEV of teens. The original data source from Rosner’s cross-sectional […]
Is the number of sticks of gum a person chews per day actually greater than 8? Show hypothesis, test statistic or P-value, and the decision about the claim.
STA2023 EXAM 3-Part 2 1-) A study was conducted to determine the number of cell phones each household has. The data are shown here. Number of cell phones 0 1 2 3 4 Frequency 2 30 48 13 7 Construct a probability distribution. Find the mean of the probability distribution. 2-) If 60% of all […]
Find the Mean, Median, Mode, and Standard Deviation of your two distributions (originals and sequels). Create a 5-number summary for each distribution.
ASSIGNMENT Procedure: First phase of activity: Create a table in your Word document. It should have 4 columns and 16 rows. Label the columns, “Original title,” “Sequel title,” “Original rating,” and “Sequel rating.” Find at least 15 movies that have sequels, and enter the titles of the movies in the first two columns of the […]