Use the Distributions tool that follows to determine the probability of obtaining a mean number of digits successfully repeated greater than the mean of Sample 133 Standard Normal th De AA The probability of obtaining a sample mean greater than the mean of Sample 133 is if the sample you select for your statistical study is t of the 200 samples you drew in your repeated sampling, the worst-luck sample you could drawis (Hint: The worst luck sample is the sample whose mean is farthest from the true mean. Thez-score corresponding to the meant Sample 133 is Use the Distributions tool that follows to determine the probability of obtaining a mean number of digits successfully repeated greater than the man of Sample 133 The mean for Sample 1933 is for Sample 133 The standard deviation Using the distribution of sample meats, calculate the z-score corresponding to the mean of Sample 132. The samples are numbered in the first column, and you can use the scroll bar on the right side to scroll to the sample you want Use the Dataview tool to find the mean and the standard deviation for Sample 133. (Hint: To see a particular sample, dick the Observations button on the left hand side of the DataView tool. Samole Vari 200 Samples Sample Sample S10 Wars 78 AT 11 13 11 112 13 130 129 14 14 126 125 7.1 Vull Correto Creation Suppose this professor happens to select Sample 133. is Just given to calculate the expected value of M.) (Hint: Use the population mean antt/or standard deviation The standard error of M.(Hint: Use the population mean and/or standard deviation Just given to calculate the standard error.) The DataView tool that follows displays a data set consisting of 200 potential samples (each sample has 49 observations).
The expected value of the mean of the 49 randomly selected students, M. The professor knows that the distribution of scores is normal, but she does not know that the true average number of digits successfully repeated on the digit span task among college students is 7.06 digits with a standard deviation of 1.63 digits. She measures the number of digits successfully repeated for 49 randomly selected students. A professor of cognitive psychology is interested in the number of digits successfully repeated on the digt span task among college students. The participant's score is the longest string of digits she can successfully repeat.
successfully, she will hear five random digits on the next trial. For instance, if the participant repeats four digits. If the participant is successful, the length of the next string is increased by one. The participant must then repeat the digits in the correct ordet. Transcribed image text: On each trial of a digit span memory task, the participant is asked to read aloud a string of random digits.
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