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The mean height of women in a country (ages 20-29) is 64.3 inches. A random sample of 70 women in this age group is selected. What is the probability that the mean height for the sample is greater than 65 inches? Assume standard deviation = 2.62
Jan is a member of a class with 20 students that meets daily. Each day for a week (Monday to Friday), a student in Jan's class is randomly selected to explain.
the average hourly wage of workers at a car wash is 6.50hr. assume the wages are normally distributed with a
question use the program binomial probabilities to find the probability that in 100 tosses of a fair coin the number of
You have the lab analyze the number of calories in each of the hot dog samples with the results below. What conclusions can you draw concerning the calorie content of the two types of hot dogs?
The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.35, and the sample statistics include n equals=1209 subjects with 447 saying that they smoked a cigarette in the past week. Find the value of the test..
does a follow-up reminder increase the renewal rate on a magazine subscription? a magazine sent out 760 subscription
1.i have computed an analysis of variance for three groups with 10 observations per group. the degrees of freedom for
question which is relatively better a score of 79 on a psychology test or a score of 38 on an economics test?
Construct a 99% confident interval for the standard deviation of the amount of vitamin B6 per pill.
a. Show that model (CE,CH,CL,EH,EL,HL) fits well. Show that model (CEH,CEL,CHL,EHL) also fits well but does not provide a significant improvement. Beginning with (CE,CH,CL,EH,EL,HL), show that backward elimination yields (CE,CL,EH,HL). Interpret i..
The frequency distribution has k = 8 classes. Assuming that the test is to be conducted at the a = 0.10 level, determine the correct decision rule to be used.
In the following table you can see the Memory Usage at a given moment of a PC computer. Find the measures of tendency and the measures of dispersion of the memory usage in Kb
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