The following frequency table shows the results for the number of times a week a person reads a daily newspaper for a sample of 40 students at the University of Gerogia.  No. of times 0  1  2  3  4  5  6  7  8  9  Frequency   6  2  8  6  3  4  3  4  2  2  a) find the mean, median, mode, standard deviation, Q1 and Q3 b) Based on sketching or using a software to make a graph, charactrize this distribution skewed to the left, right or symmetric. Explain

b) Rachel received the following scores on the midterm and final examinations in his introductory psychology course. The mean and the standard deviation for each test are given below. Assume that the normal distribution provides a good model for the frequency distribution. Section 8. 40 90 |Midterm 50 Final 100 12 i. What percentage of students scored better than Rachel on the midterm? The department has decided that all marks from introductory psychology courses should be reported based on a standardized distribution with a mean of 100 and standard deviation of 15. What would be Rachel's final examination scores based on ii. this new distribution?

A developmental psychologist is interested in studying how long babies gaze at a photograph of a human face. To test this question, she shows a picture to a sample of six babies and records the length of their gaze in seconds. The data are as follows: 12, 17, 18, 20, 20, 29. Calculate the mean, median, mode, range, variance and standard deviation for the sample.

Suppose that 14 children, who were learning to ride two-wheel bikes, were surveyed to determine how long they had to use training wheels. It was revealed that they used them an average of eleven months with a sample standard deviation of two months. Assume that the underlying population distribution is normal. Part (a) (i) Enter an exact number as an integer, fraction, or decimal. x =  (ii) Enter an exact number as an integer, fraction, or decimal. sx =  (iii) Enter an exact number as an integer, fraction, or decimal. n =  (iv) Enter an exact number as an integer, fraction, or decimal. n − 1 =  Part (b)   Part (c)     Part (d) Which distribution should you use for this problem? (Enter your answer in the form z or tdf where df is the degrees of freedom.)       Explain your choice. Construct a 99% confidence interval for the population mean length of time using training wheels. (i) State the confidence interval. (Round your answers to two decimal…