Out of 300 people sampled, 45 had kids. Based on this, construct a 90% confidence interval for the true population proportion of people with kids. Give your answers as decimals, to three places ________ < p < ________

The mean score for Scrabble players at the neighborhood center is m = 215 points. The players read a book that claims it can raise scores significantly.  After reading the book, a team of 25 players obtains a score of M = 218 points, with s= 25.  Do the data indicate that reading the book leads to increases in the players’ scores?  Test with a = .05 Calculate and evaluate Cohen’s d and r2. What decision can you make and what does it indicate? What type of error could you be making and what would that mean? Report your results with an APA-style phrase.

ssume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15 (as on the Wechsler test).  Find the following:                                                                                                         The Z-value that separates the bottom 18% from the others.                                                                                                         The Z-Value for the 95 percentile.                                                                                                         What is the IQ score that separates the bottom 18% from the others?                                                                                                         The 95 percentile is? A. 113.725 B. -.92 C. 75.325 D. -.915 E. 1.645 F. 86.275 G. 124.675 H. .915

Find the indicated IQ score. The graph to the right depicts IQ scores of​ adults, and those scores are normally distributed with a mean of 100 and a standarthed deviation of 15   0.6   the indicated IQ score, x is ________.  Round to one decimal place as needed.