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Q: What is the domain and range of this graph?
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A: Given:
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A: The derivative of a function of a real variable measures the sensitivity to change of the function…
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- A market researcher for a consumer electronics company wants to study the media viewing behavior of residence of a particular area. A random sample of 40 respondents is selected and each respondent is instructed to keep a detailed Record of time spent in gaged doing contact across all screens in a particular week. The results are as follows: continuing time per week: x=54 hours, s=4.1 hours. 8 respondents have high definition on at least one television set.Below incldes the results from a recent survey with Get Food Now customers First interaction that result in a purchase = 25% Customers satisfied with first interaction = 335% Preferred type of interaction = 100% First interaction with Get Food now = 100% If each order had an average of £50, how many total interactions across all types would Get Food Now need in order to ear £10,000 from face to face interactions onlyIt has been noted that the amount of time people spend shopping in supermarkets incountry X has decreased due to the discovery of a new strain of Covid19. Based onthis realization,the manager of Power Supermarket decided to collect data for thelength of time people spend in his supermarket during a one week period. He is aimingto use the data to help him decide if the supermarket should be converted to a virtualsupermarket/a delivery based one.a. Use the information below to construct two frequency polygons.b. Do you think that Power Supermarket should close their doors?Explain your answer.*Assume that a person who spends more time in a supermarket buys a lot of goods anda person who spends a short time in a supermarket,buys few goods Beforethepandemic: Time Frequency1-5 506-10 2511-15 2216-20 8021-25 6026-30 4531-35 3 After the pandemic:Time Frequency1-5…
- The average annual salary for 55 statisticians out of 205 statisticians at a search information company is $176,875. Which of the following best describes the bold-face number? a. Quantile b. Parameter c. Statistic d. rangeA research center claims that at least 23% of adults in a certain country think that their taxes will be audited. In a random sample of 1000 adults in that country in a recent year, 19% say they are concerned that their taxes will be audited. At α=0.05, is there enough evidence to reject the center's claim? Complete parts (a) through (e) below. (a) Identify the claim and state H0 and Ha.A researcher hypothesizes that electrical stimulation of the lateral habenula will resultin a decrease in food intake (in this case, chocolate chips) in rats. Rats undergostereotaxic surgery and an electrode is implanted in the right lateral habenula. Followinga ten day recovery period, rats (kept at 80 percent body weight) are tested for thenumber of chocolate chips consumed during a 10 minute period of time both with andwithout electrical stimulation. The testing conditions are counter balanced. Compute theappropriate t-test for the data provided below.Stimulation No Stimulation12 87 73 411 148 65 714 127 59 510 8What probability level did you choose and why?What were your degrees of freedom?Is there a significant difference between the two testing conditions?Interpret your answer.If you have made an error, would it be a Type I or a Type II error? Explain youranswer.
- A researcher hypothesizes that electrical stimulation of the lateral habenula will resultin a decrease in food intake (in this case, chocolate chips) in rats. Rats undergostereotaxic surgery and an electrode is implanted in the right lateral habenula. Followinga ten day recovery period, rats (kept at 80 percent body weight) are tested for thenumber of chocolate chips consumed during a 10 minute period of time both with andwithout electrical stimulation. The testing conditions are counter balanced. Compute theappropriate t-test for the data provided below.Stimulation No Stimulation12 87 73 411 148 65 714 127 59 510 81. What is your computed answer?2. What would be the null hypothesis in this study?3. What would be the alternate hypothesis?4. What probability level did you choose and why?5. What were your degrees of freedom?6. Is there a significant difference between the two testing conditions?7. Interpret your answer.8. If you have made an error, would it be a Type I or a Type II…The following data are for the throughput, as measured by the number of wafer lots produced per day by different operators (A, B, C, and D) on different machines (each operator used each machine on two different days): Eighty-four working days were needed to collect the data. The numbers in parentheses refer to the days on which the results were obtained. For example, on the first day, operator A produced 17 lots using machine 2, and on the 84th day, operator A produced 18 lots using machine 5. On some days (such as the third day), more than one item of data was collected, and on other days (such as day 40), no data was collected. Analyze the data, stating all assumptions and conclusions.Middle school students were randomly sorted into one of two groups. Members of each group performed a series of mental tasks while music was playing in the background. One group listened to pop music and the other to country music. It is believed that music will impact the number of tasks completed. What can be concluded with α = 0.01? The results are below: pop country u1 = 34.34 u2 = 49.25 σ1 = 4.08 σ2=6.48 n1 = 14 n2 = 6 A) Condition 1: Conditon 2: B)Obtain/compute the appropriate values to make a decision about H0. critical value= test statistic= Reject or Fail to Reject C)Compute the corresponding effect size(s) and indicate magnitude(s). d= / magnitude= r2 = / magnitude =
- A soft drink dispenser is set to automatically dispense drinks and ice in 8 oz cups. The machine is set to fill cups with 7.25 oz so that the liquid will not run over the top of the cup. The company is getting complaints that the machine is filling the cups too full and spilling over. When the machine is working properly, only 1% of the cups will not be filled properly. The production manager conducted a one-tail test at the 0.01 level to check the machine. A sample of 50 fills was measured. Using the P-value approach, formulate a hypothesis test to examine the possibility that the machine could be faulty. State the null and alternative hypothesis.AUA wants to know whether recent alumni students from MBA class earn significantly more than recent alumni from BAB class. They take a sample of several students and ask the amount of their monthly salaries in USD (Sheet 32). What can AUA conclude at alpha=0.05? Sheet 32 MBA BAB 515 300 450 420 620 380 630 450 570 420 590 490 750 510 560 470 480 530 250 570 320 480 450 620 625 190 350 280 450 350 570 250 Select one: a. t(stat)=1.92, which is greater than t(cr)=1.7, therefore, we can conclude that MBA graduates earn more BAB graduates. b. t(stat)=1.89, which is greater than t(cr)=1.75, therefore, we can conclude that MBA graduates earn more BAB graduates. c. t(stat)=2.07, which is greater than t(cr)=1.69, therefore, we cannot conclude that MBA graduates earn more BAB graduates. d. t(stat)=2.07, which is greater than t(cr)=1.69, therefore, we can conclude that MBA graduates earn more BAB graduates.In his doctoral thesis, L. A. Beckel (University of Minnesota, 1982) studied the social behavior of river otters during the mating season. An important role in the bonding process of river otters is very short periods of social grooming. After extensive observations, Dr. Beckel found that one group of river otters under study had a frequency of initiating grooming of approximately 1.7 for each 10 minutes. Suppose that you are observing river otters for 30 minutes. Let r = 0, 1, 2, ... be a random variable that represents the number of times (in a 30-minute interval) one otter initiates social grooming of another. a) What is ?? b) Write out the formula for the probability distribution of the random variable r. P(r) = _________ c) Find the probability that one otter will initiate social grooming four or more times during the 30-minute observation period. (Round your answer to four decimal places.)