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- A credit union takes a sample of four mortgages each month to survey the homeowners’ satisfaction with the credit union’s servicing of their mortgage. Each mortgage is classified as a fixed rate (F) or variable rate (V). a. What are the 16 possible combinations of the four mortgages? Hint: One such possibility would be F1V2V3F4The KLM Christmas tree Farm owns a plot of land with 5000 evergreen trees.Each year KLM allows retailers of Christmas trees to select and cut trees for sale to individualcustomers. KLM protects small trees (usually less than 4 feet tall) so that they will be availablefor sale in future years. Currently, 1500 trees are classified as protected trees, while theremaining 3500 are available for cutting. However, even though a tree is available for cuttingin a given year, it may not be selected for cutting until future years. Most trees not cut in agiven year live until the next year, but some diseased trees are lost every year. In viewing the KLM Christmas tree operation as a Markov process with yearly periods, we define thefollowing four states:A researcher wants to explore the differences in health effects from two different types of sugar. She hypothesizes that artificial sweetener has lower long term health benefits than natural sugar. What is her null hypothesis? Fill in the blank. H0: μArtificalSweetener__________ μNaturalSugar Group of answer choices a) Less than b) Less than or equal to c) Greater than d) Greater than or equal to
- During a long-distance kayak race series, a competitor traveled for a total of 48 kilometers over the course of 10 hours on two rivers. 6 kilometers were traveled on the first river, and 42 kilometers were traveled on the second river. On the first river, the competitor traveled at an average speed 4 kilometers per hour less than he traveled on the second river. What was the average speed of the competitor on the first river? (Do not include the units in your response.)Use the midpoint rule when n=4 to estimate in m2 of a pool with measurements ; 3.1, 3.6, 3.4, 2.8, 2.5, 2.4, 2.4 Thank youThe market share analysis company, Net Applications, monitors and reports on the use of the Internet browser. According to Net Applications, in the summer of 2014, Google's Chrome browser topped 20% of browsers for the first time, with a percentage of 20.37% (p = 0.2037). For a randomly selected group of 20 Internet browser users, answer the following questions. (In each case write a number. Where necessary, round to four decimal places. Include a zero before the decimal point in amounts less than 1). (d) For the sample of 20 users, calculate the variance ( ) and standard deviation for the number of Chrome users.
- The label on a 200 gram chocolate bar says the chocolate bar has exactly 370 calories. However, it is believed that the company selling the chocolate bar is intentionally misrepresenting the caloric information to be smaller than it actually is. We would like to check whether the calorie information is correct as labelled or if the company is putting a smaller number on the label. Let µ be the average number of calories in a bar. Which option in the picture tests is most sensible test for µ?The manifacturer of a certain brand of cigarettes claims that the average nicotine cintebtbdoes not exceed 2.5 mg. State the H0 and H1 in testing and determine what type of test to be utilized. H0: H1:The past records of a supermarket show that its customers spend an averageof $95 per visit at this store. Recently the management of the store initiated a promotionalcampaign according to which each customer receives points based on the total moneyspent at the store, and these points can be used to buy products at the store. Themanagement expects that as a result of this campaign, the customers should beencouraged to spend more money at the store. To check whether this is true, the managerof the store took a sample of 14 customers who visited the store. The following data givethe money (in dollars) spent by these customers at this supermarket during their visits. 109 136 107 116 101 109 110 94 101 97 104 83 67 120Assume that the money spent by all customers at this supermarket has a normaldistribution. Using a 5% significance level, can you conclude that the mean amount ofmoney spent by all customers at this supermarket after the campaign was started is morethan $95?
- A blood pressure measurement consists of two numbers: the systolic pressure, which is the maximum pressure taken when the heart is contracting, and the diastolic pressure, which is the minimum pressure taken at the beginning of the heartbeat. Blood pressures were measured, in millimeters of mercury (mmHg), for a sample of 10 adults. The following table presents the results. ---Predict the diastolic pressure for a patient whose systolic pressure is 145 millimeters. Round the answer to one decimal place.You randomly sample 150 FIU students and collect data on the number of coffee drinks consumed per day. The maximum number of coffee drinks consumed per day was 3. Assume that each coffee drink contains 90 milligrams of caffeine. For the following data, compute the sample mean ( y ¯ ) for the variable "Milligrams of Caffeine from Coffee per Day". Round your answer to an integer. Number of Coffee Drinks per DayN050142235323High in the Rocky Mountains, a biology research team has drained a lake to get rid of all fish. After the lake was refilled, they stocked it with an endangered species of Greenback trout. Of the 2000 Greenback trout put into the lake 900 were tagged for later study. An electroshock method is used on individual fish to get a study sample. However, this method is hard on the fish. The research team wants to know the smallest number of fish that must be electroshocked to be at least 90% sure of getting a sample of two or more tagged trout. Please provide the answer. For more studies similar to this one, see A National Symposium on Catch and Release Fishing, Humboldt State University.
