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- 1.3 In a recent survey, 10,000 households were randomly selected. One of the questions on the survey asked how many TVs they had. The results are given in the table below. Number of TVs to number of households # of TVs # of Households P(X=x) 0 160 1 3140 2 3790 3 1920 4 780 5 210 Total 10,000 e) What is the average number of TVs in a household?Calculate the z-value for a mean for the following p̂= 0.250p0 = 0.350n = 10how is 0.46= .32276 because on the z table it's 32.64 so where does the .32276 come from
- Is #7 2.365? It seems to be from the table but I think I'm wrong and don't understand whyWhich of the following statements is correct? A. sigma is the average distance between an individual in a population and the population mean. B. s is the average distance between an individual in a sample and the population mean. C. sigma/√n(or sigma √n if sigma is unknown) is the average distance between a sample mean of size n and the population mean. D. Both A and C.Calculate the first four moments of the following dis- tribution about the mean and hence find B, and ß2 : 1 x: 0 f: 1 3 4 5 56 6 7 8 1 8 28 56 70 28 A00
- EDFN 1090/1092 Assignment #5 1. Would you expect a positive, negative, or zero correlative between each of the following pairs of variables? a. Heights of mothers and daughters b. Age and reaction time in the adult population c. Natural gas usage and prevailing (outside) temperature d. Reading skill and shoe size in the population of individuals over 18 2. A researcher hypothesized that there is a relationship between self-esteem and social responsibility, which increases with age. The researcher gave self-esteem and social responsibility inventories to two sets of people: a group of 10 high school students and 10 adults. The data collected are given below (SE = self- esteem; SR = social responsibility). High School Students SE. 10 12 13 PASH6809 11 5 14 10 SR 21 20 16 18 112128 19 17 19 10 13 20 HARDHSCDHSH SE 13 15 12 14 8 6 12 11 9 14 Adults HENNARSDDKSG 23 24 21 20 18 12 19 18 15 20 years old a. Calculate the correlation for adults given the values below. (Let X = SE, Y = SR) Σ ΧΥ…. The statistic of z = -1.94 is obtained when testing the claim that p = 3⁄85. Find two z values, one positive and one negative, that are equidistant from the mean so that the areas in the two tails total the following values. a. 5% b. 10% c. 1%