CoStar would like to test if the vacancy rate for "warehouse" stores is more than 8%....
Question 13 (5 points) A professor would like to assess the hypothesis that the average number of minutes that a student needs to complete a statistics trial is equal to 45 minutes. The correct hypothesis statement would be Question 13 options: a) H0: μ = 45; H1: μ > 45. b) H0: μ = 45; H1: μ ≠ 45. c) H0: μ ≠ 45; H1: μ = 45. d) H0: μ = 45; H1: μ < 45. Question 14 (5...
Question 3 (5 points) Expedia would like to test the hypothesis that the proportion of United Airline flights that arrive on-time is less than 0.80. A random sample of 110 United Airline flights found that 82 arrived on-time. Expedia would like to set α = 0.02. The critical value for this hypothesis test would be ________. Question 3 options: -1.28 -1.645 -2.05 -2.33 Question 4 (5 points) A golfer claims that his average golf score at the course he plays...
Question 17 (5 points) Entertainment Software Association would like to assess if the average age of "gamers" (those that routinely play video games) is more than 30 years old. A Type II error would occur if Entertainment Software Association concludes that the average age of gamers is Question 17 options: a) 30 years or less when, in reality, the average age is more than 30 years. b) greater than 30 years when, in reality, the average age is 30 years...
1) Consider the hypotheses shown below. Given that x bar =113, σ = 25, n=49, α=0.01, complete parts a and b. Upper H0: μ =120 Uppe H1: μ ≠ 120 What conclusion should be drawn? a) The z-test statistic is b) The critical z-score(s) is (are) c) Because the test statistic ____ _____ the null hypothesis 2) Consider the hypotheses shown below. Given that x bar=57, σ=12, n=39, α=0.01, complete parts a and b. Upper H0: μ ≤ 54 Upper...
Question 10 (5 points) Many hotel chains that offer free Wi-Fi service to their customers have experienced increasing demand for Internet bandwidth and increasing costs. Marriott International would like to test the hypothesis that the proportion of customers that are carrying two Wi-Fi devices exceeds 0.40. A random sample of 130 Marriott customers found that 63 have two Wi-Fi devices. Marriott International would like to set α = 0.05. The critical proportion for this hypothesis test would be ________. Question...
A local news agency would like to test the claim of the mayor that more than half the voters in the city support the construction. If p is the proportion of voters in favor of the construction, the news agency will test H 0 : p = .5 against H 1 : p < .5 to a .05 level of significance by surveying 500 voters. If 225 voters are in favor of the construction give the P-value and your conclusion....
Medicare would like to test the hypothesis that the average monthly rate for one-bedroom assisted-living facility is equal to $3,300. A random sample of 12 assisted-living facilities had an average rate of $3,690 per month. The standard deviation for this sample was $530. Medicare would like to set α = 0.05. The conclusion for this hypothesis test would be that because the absolute value of the test statistic is less than the absolute value of the critical value, we cannot...
Problem 1: Medicare would like to test the hypothesis that the average monthly rate for one-bedroom assisted-living facility is equal to $3,300. A random sample of 12 assisted-living facilities had an average rate of $3,690 per month. The standard deviation for this sample was $530. Medicare would like to set α = 0.05. The correct hypothesis statement for this hypothesis test would be H0: μ ≥ $3,300; H1: μ < $3,300. H0: μ = $3,300; H1: μ ≠ $3,300. H0:...
Infants weighing less than 1,500 grams at birth are classed as "very low birth weight." Low birth weight carries many risks. IQ tests are designed to produce IQ scores varying Normally with standard deviation ?=15 . They are also scaled so that the mean score in a large population should be ?=100 . One study followed 113 male infants with very low birth weight to adulthood. At age 20 , the mean IQ score for these men was ?¯=87.6 ....
Hypotheses and Type I and II errors An ethnopsychology professor conducts a statistical study to test her belief that Koreans in Korea have higher rates of alcoholism than Korean Americans. QUESTION 1 The ethnopsychologist formulates the null hypothesis as: A) The proportion of Koreans living in Korea who are alcoholics is equal to the proportion of Korean Americans who are alcoholics. B) The proportion of Koreans living in Korea who are alcoholics is greater than the proportion of Korean Americans...