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- 11 Data Mining Language: R Maximum how many database scans are needed by the improved Apriori algorithm with sampling? 1 2 3 4 Select OneA state game commission introduces 40 deer into newly acquired state game lands. The population N of the herd can be modeled byA systems analyst tests a new algorithm designed to work faster than the currently-used algorithm. Each algorithm is applied to a group of 7373 sample problems. The new algorithm completes the sample problems with a mean time of 24.2824.28 hours. The current algorithm completes the sample problems with a mean time of 26.9726.97 hours. Assume the population standard deviation for the new algorithm is 3.5873.587 hours, while the current algorithm has a population standard deviation of 4.0394.039 hours. Conduct a hypothesis test at the 0.050.05 level of significance of the claim that the new algorithm has a lower mean completion time than the current algorithm. Let μ1μ1 be the true mean completion time for the new algorithm and μ2μ2 be the true mean completion time for the current algorithm. Step 3 of 4 : Determine the decision rule for rejecting the null hypothesis H0H0. Round the numerical portion of your answer to three decimal places.
- A systems analyst tests a new algorithm designed to work faster than the currently-used algorithm. Each algorithm is applied to a group of 7373 sample problems. The new algorithm completes the sample problems with a mean time of 24.2824.28 hours. The current algorithm completes the sample problems with a mean time of 26.9726.97 hours. Assume the population standard deviation for the new algorithm is 3.5873.587 hours, while the current algorithm has a population standard deviation of 4.0394.039 hours. Conduct a hypothesis test at the 0.050.05 level of significance of the claim that the new algorithm has a lower mean completion time than the current algorithm. Let μ1μ1 be the true mean completion time for the new algorithm and μ2μ2 be the true mean completion time for the current algorithm. Step 1 of 4 : State the null and alternative hypotheses for the test.A certain type of digital camera comes in either a 3-megapixel version or a 4-megapixel version. A camera store has received a shipment of 15 of these cameras, of which 6 have a 3-megapixel resolution. Suppose that 5 of these cameras are randomly selected to be stored behind the counter; the other 10 are placed in a storeroom. Let X= the number of 3-megapixel cameras among the 5 selected for behind-the-counter storage. a. What kind of a distribution does X have (name and values of all parameters)? b. Compute P(X=2), P(X≤2), and P(X≥2). c. Calculate the mean value and standard deviation of X.Suppose P(t) represents the population of a certain mosquito colony...
- find the mximum possible order of S51. A researcher observed a rat respond for a food reward by pressing one of the three levers in a cage. Pressing the lever to the right (R) produced no food reward. pressing the lever to the left (L) produced a single food pellet, and pressing the lever at the center (C) produced two food pellets. Because the center level produced the largest reward, the researcher hypothesized that the rat would press this lever most often. Each trial ended when the rat produced a level. The researcher recorded lever pressing for 30 trials. L, L, R, L, R, C, R, L, C, L, L, C, C, C, R, C, R, C, L, C, C, L, C, C, C, L, C, C, C, C, C - Create the appropiate graph for this data - Do these data support the hypothesis? Explain. 2. Which scales of measurement are assumed to be discrete? What does this mean? Which scales of measurement are assumed to be continuous? What does this mean? 3. What type of graph should you create to visualize the following frequency data? Explain. -…People are classified as hypertensive if their systolic blood pressure (SBP) is higher than a specified level for their age group, according to the algorithm in the table below. Assume SBP is normally distributed with mean, and standard given in the table for age groups 1 – 14 and 15 – 44, respectively. Define a family as a group of two people in age group 1 – 14 and two people in age group 15 – 44. A family is classified as hypertensive if at least one adult and at least one child are hypertensive. i. What proportion of 1 – 14-year-olds are hypertensive? ii. What proportion of 15 – 44-year-olds are hypertensive?
- Question # 1 Suppose that a store sells six varieties of soft drinks: cola, ginger ale, orange, root beer, lemonade, andcream soda. Use a tree diagram to determine the numberof different types of bottles the store must stock to have all varieties available in all size bottles if all varietiesare available in 12-ounce bottles, all but lemonade are available in 20-ounce bottles, only cola andginger ale are available in 32-ounce bottles, and all butlemonade and cream soda are available in 64-ouncebottles?a. Determine the net weight of most of the sample. b. Determine the maximum net weight of the 20% of the sample that has the minimum net weight.1. A University Director wants to see whether the average time (in minutes) it takesstudents to reach classes on time is different for three groups. The data are shown here.Junior Senior Graduates35 9 1518 3 627 12 2724 6 2221 12 2414821a) At α=0.05, can the owner conclude that there is a significant difference among themeans?b) If there is a significant difference among the means, test each pair of means?