Weinstein, mcdermott, and roediger (2010) report that students who were given questions to be answered while studying new material had better scores when tested on the material compared to students who were simply given an opportunity to reread the material. in a similar study, an instructor in a large psychology class gave one group of students questions to be answered while studying for the final exam. the overall average for the exam was μ = 73.4 but the n = 16 students who answered questions had a mean of m = 78.3 with a standard deviation of σ = 8.4. for this study, did answering questions while studying produce significantly higher exam scores? use a onetailed test with α = .01. gravetter, frederick j. statistics for the behavioral sciences (p. 296). cengage learning. kindle edition.

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes.she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?

Which image (a’ b’ c’ d’) of abcd cannot he produced using only reflections ?

Atest of sobriety involves measuring the subject's motor skills. a sample of 31 randomly selected sober subjects take the test and produce a mean score of 64.4 with a standard deviation of 2. a claim is made that the true mean score for all sober subjects is equal to 65. for each part below, enter only a numeric value in the answer box. for example, do not type "z =" or "t =" before your answers. round each of your answers to 3 places after the decimal point. (a) calculate the value of the test statistic used in this test. test statistic's value = (b) use your calculator to find the p-value of this test. p-value = (c) use your calculator to find the critical value(s) used to test this claim at the 0.2 significance level. if there are two critical values, then list them both with a comma between them. critical value(s) =