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The probability of making a Type I Error is referred to as the
a. alternative hypothesis
b. Null hypothesis
c. non responsive bias
d. level of significance
If the consequence of making a Type I Error is severe, then the level of significance should be set _____.
a. to 0.5
b. high
c. to .10
d. low
If we decrease the probability f making a Type I Error, then we ________ the probability of making a Type II Error.
a. decrease
b. increase
if the P is low....
a. Reject the H0
b. Fail to reject H0
PROBLEM #1
According to last year's report, a Filipino household spends an average of 400 pesos a day for food. Suppose you recently took random samples of 30 households, and determined how much each household spent for food each day. The results revealed a mean of 390 pesos and the standard deviation of 21.50 pesos. Using 0.01 level of significance, can it be concluded that the average amount spent per day for food of a Filipino household has decreased? Assume normality over population.
Find the critical value
A normal distribution has μ = 80 and σ = 10. What is the probability of randomly selecting between the mean and a score of 50
Railroad Crossing Accidents The data show the number of railroad crossing accidents for the 50 states of the United States for a specific year. Construct a histogram, frequency polygon, and ogive for the data. Comment on the skewness of the distribution. (The data in this exercise will be used for Exercise 15 in this section.)
Restaurants often Slip takeout menus under harolds apartment door. So far, Harold has collected 19 menus, including 19 menus, including 1 for Chinese food. What is the probability that one of harolds takeout menus, selected random, will be from a Chinese restaurant
Show that Tn=x+1/n+2 is a consistent estimator of the parameter theta of a binomial population
find the point estimate of the population parameter μ, and the standard deviation of the given set of data below;
Percentage of children who watch TV before bedtime
70 67 58 60 69 62 70 62
69 59 77 59 52 79 59 59
80 42 60 59 68 40 68 68
56 66 60 40 57 57 70 71
72 54 52 67 62 59 71 72
81 49 45 78 78 69 68 69
