The results section of an article reports the following “IQ scores of the sample differ from the population mean of 100, single sample t (19) = 2.80, p < .05, two tail”. Based on this result, how many people were included in the sample? Select one: 20 21 19 38

7: Identify the overall shape of each histogram below: × 15 Correst matchi Would V. (H1) Skewed to the (H3) Skewed to the middle (b) If the highest bar on each histogram corresponds to a value of 15 of the matching variable, as denoted above, then for which of these three histograms does the matching variable have the lowest mean? Briefly say why. if the hig 1/2 (H2) Skowed to the right -nean L [] Compare

289 221 301 374 336 351 a)what is the standard deviation b) What is the first quartile and third quartile in this sample? c) What is the 43rd percentile of the data

was collected for 180 randomly selected 10 minute intervals. For each ten-minute interval, the number of people entering the atrium of a large mall were recorded. The data is summarized in the table below. Number of Guests Frequency 60 - 69 17 70 - 79 42 80 - 89 90 - 99 38 100 - 109 55 What is the class width for this GFDT? Class width= 10 Question Help: Message instructor Submit Question It is the user's responsibility to inspect all PPE before use to ensure proper integrity. Do not perform work without PPE of acceptable quality All PPE must adhere to requirements detailed e W X withous chrys prt sc F10 F5 F7 9 ! Bi 4x F1 C F2 28 < F3 # C 0x F4 $ % F6 A 6 8 & 7 F8 F9 8 home 0 end F12

Given a set of normally distributed scores with the mean of 20.00 and SD of 5.00, what proportion of scores are  a) between 10 and 28 b) between 15 and 32

The table below shows the scores of a group of students on a 10-point quiz. Test Score Frequency 3 4 4 2 5 2 6 3 7 1 8 4 9 2 10 1 The mean score on this test is: IncorrectThe median score on this test is: Show your work

Steve's average golf score at his local course is 92.9 from a random sample of 60 rounds of golf. Assume that the population standard deviation for his golf score is 4.2. The standard error of the mean for this sample is ________. A)  0.54 B)  1.17 C)  1.56 D)  2.30