Please help me answer these stats questions
The distribution of actual weights of At a particular university, students' grades wedges of cheddar cheese produced at a in introductory statistic classes are dairy is normal with a mean of 12.0 ounces generally unimodal and skewed to the left and a standard deviation of 0.19 ounces. with a mean of / = 68 and a standard (Round all answers to 4 decimal places, if What does it mean if a statistic is needed.) deviation of a = 16.0. (Round your answers unbiased? to four decimal places, if needed.) (a) The probability that a randomly chosen Both the person who calculated the wedge of cheddar cheese is greater than (a) The distribution of students' grades is statistic and the subjects whose 11.96 is is approximately normal responses make up the statistic were truthful. (b) If a sample of 18 is randomly chosen, (b) If n = 38 students are selected at then the distribution of the sample mean The sample size is really large. random, the distribution of the sample weight is approximately normal * with mean grade is approximately normal * O The mean of its sampling a mean of and a with a mean of and a distribution is equal to the true value of standard deviation of the parameter being estimated. standard deviation of (c) The probability that the sample mean It is used for only honest purposes. weight of this sample of 18 is less than (c) The probability that the sample mean The survey used to obtain the # 1 11.96 is grade for these 38 students is less than statistic was designed so as to avoid 69.0 is (d) The probability that the sample mean # 4 even a hint of racial or sexual prejudice. weight of this sample of 18 is greater than 11.96 is (d) If n = 38 students are selected at # 3 random, the distribution of the sample In a large population of adults, the mean IQ is 120 with a standard deviation of 18 (e) The probability that the sample mean total grade is approximately normal * weight of this sample of 18 is between Suppose 45 adults are randomly selected with a mean of and a 11.96 and 12.09 is or a market research campaign. (Round all standard deviation of answers to 4 decimal places, if needed.) (f) There is only a 7% chance that the average weight of a sample of these 18 (e) The probability that the total grade for (a) The distribution of IQ cheese wedges will be below these 38 students is less than 2622.0 is is approximately normal (b) The distribution of the sample mean IQ Andy is a restaurant owner. He believes s approximately normal . with a mean Suppose 2% of students drink more than 3 81% of his customers are satisfied with the and a standard cups of coffee each day. To check this food quality of his restaurant. From a claim, a researcher randomly selected a random sample of 93 customers, what are deviation of sample of 146 students and found that 4 the following probabilities? (Round your answers to four decimal places, if needed.) drink more than 3 cups of coffee each day. (c) The probability that the sample mean Q is less than 116 is What is the sampling distribution of the (a) What is the probability that less than 76 sample proportion? (Round your answers customers are satisfied with the food quality? (d) The probability that the sample mean to four decimal places, if needed.) Q is greater than 116 is # 2 The distribution of the sample proportion (b) What is the probability that at least 76 of students drinking more than 3 cups of customers are satisfied with the food quality? (e) The probability that the sample mean coffee each day Q is between 116 and 125 is is approximately normal * with a mean (c) What is the probability that the sample proportion of customers who are satisfied of and a standard with the food quality is between 79% and Check deviation of # 5 86%? #7
