In a proposed business venture, a businesswoman estimates there is a 60% chance she will make $52,000 and a 40% chance she will lose $53.000, Determine her expected value. ..... Her expected value is $
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- a. Find the method of moments (MOM) estimator of θ. b. Is the MOM estimator unbiased?To measure whether test performance can be predicted based on one’s anxiety, a researcher asked his students to come to the lab 15 minutes before they were to take an exam in his class. The researcher measured the students' heart rates and then matched these scores with their exam performance after they had taken the exam. Use the data below and SPSS to test whether heart rate can predict test performance in the population. Student Heart Rate Exam Score A 76 78 B 81 68 C 60 88 D 65 80 E 80 90 F 66 68 G 82 60 H 71 95 I 66 84 J 75 75 K 80 62 L 76 51 M 77 63 N 79 71 1.) In this specific scenario, are the two variables of interest? Which is the IV and which is the DV? What is the scale of measurement for each variable? 2.) Relate to this specific scenario: What is the null hypothesis? What is the alternate / research hypothesis? Which one do you statistically…To measure whether test performance can be predicted based on one’s anxiety, a researcher asked his students to come to the lab 15 minutes before they were to take an exam in his class. The researcher measured the students' heart rates and then matched these scores with their exam performance after they had taken the exam. Use the data below and SPSS to test whether heart rate can predict test performance in the population. Student Heart Rate Exam Score A 76 78 B 81 68 C 60 88 D 65 80 E 80 90 F 66 68 G 82 60 H 71 95 I 66 84 J 75 75 K 80 62 L 76 51 M 77 63 N 79 71 Q: Relate to this specific scenario: What is the null hypothesis? What is the alternate / research hypothesis? Which one do you statistically assess? Q: Present the results using APA format. This includes a full write-up to include a complete statistical…
- Answer the following questions based on the attached MINITAB output Y= Purchased car during the year (yes/no) X1= Family Yearly Income (in thousands) X2= Age of oldest family automobile a) suppose that a family owns a sigle car that is 3 years old and has income of $45000 per year. Provide a statement estimating the chance they'll buy a new car this year. b) Another model using 5 additional variables produced these numbers. WHich models would you choose and why? Deviance Devicance R-sq R-sq (adj) AIC 19.44% 13.98% 40.69 e) Draw whatever concludions seem appropriate about the impact of the age of the families oldest car. Include in your comments any reccomendation for further study that might be appropriate.An insurance company estimates the probability of an earthquake in the next year to be 0.0013. They estimate the average damage done by an earthquake to be $60,000. The company offers earthquake insurance for $100 per year, and when damage occurs, the company pays the full price to the customer. Suppose you are working for the company and want to plan for their future finances. (a) What is the expected value of the insurance company’s payout to a customer in a year? $ equation editor Equation Editor (b) What is the expected value of the insurance company’s profit from each customer in a year?A. Clearly state an appropriate null hypothesis and an alternative hypothesis. B. What proportion of deaths occurred while the windows were set at a vertical orientation? C. What statistical test would you use to test the null hypothesis? D. Carry out the statistical test from part (c). Is there evidence that window angle affects the mortality rates of birds?
- Part C: Perform a chi-square test for the hypotheses. H0: The number of courses enrolled by students at the local college and their employment status have no association.Ha: The number of courses enrolled by students at the local college and their employment status have an association. What can you conclude based on the p-value?Lesson: 7.2 Central Limit Theorem with Mean A quality control expert at LIFE batteries wants to test their new batteries. The design engineer claims they have a variance of 8100 with a mean life of 1192 minutes. If the claim is true, in a sample of 72 batteries, what is the probability that the mean battery life would differ from the population mean by greater than 5.2 minutes? Round your answer to four decimal places.review(4c): The following table summarizes the outcomes of a study that researchers carried out to determine if females expresses a greater fear of heights than males. Find the expected number of females who should express fear of heights if the variables are indepently related. Round your answer to the nearest whole number. Men Women expressed a fear of heights 68 109 did not express a fear of heights 94 89 (a) 80 (b) 93 (c) 87 (d) 97
- A 2009 study showed that handling money reduces the perception of pain. Two groups ofparticipants were asked to participate in a manual dexterity study. Half of the participantswere given a stack of money to count and the other half were given a stack of blankpieces of paper to count. After the counting task, the participants were asked to dip theirhands into bowls of very hot water (122 degrees Fahrenheit) and rate how uncomfortableit was. The following data show ratings of pain similar to the results obtained in thestudy.Counting Money Counting Paper7 98 1110 136 108 115 97 1512 145 10?1 = 7.56 ?2 = 11.33SS = 42.22 SS = 38a. Based on the sample data, does the treatment have a significant effect at = .01?(Remember, all 4 steps here.)b. Calculate Cohen’s d to estimate the effect size and determine if it is small, medium orlarge.Identical twins come from a single egg that split into two embryos, and fraternal twins are from separate fertilized eggs. Also, identical twins must be of the same sex and the sexes are equally likely, and sexes of fraternal twins are equally likely. Use the data table to complete parts (a) and (b) below. Sexes of Twins boy/boy boy/girl girl/boy girl/girl ID 3 0 0 3 FRT 5 5 5 5 After studying the sonogram more closely, the physician tells the pregnant woman that she will give birth to twin boys. What is the probability that she will have identical twins? That is, find the probability of identical twins given that the twins consist of two boys.Laptop Computers and Sperm CountStudies have shown that heating the scrotum by just 1∘C can reduce sperm count and sperm quality, so men concerned about fertility are cautioned to avoid too much time in the hot tub or sauna. A new study1 suggests that men also keep their laptop computers off their laps. The study measured scrotal temperature in 29 healthy male volunteers as they sat with legs together and a laptop computer on the lap. Temperature increase in the left scrotum over a 60-minute session is given as 2.31±0.96 and a note tells us that "Temperatures are given as ∘ C; values are shown as mean ±SD." The abbreviation SD stands for standard deviation. (Men who sit with their legs together without a laptop computer do not show an increase in temperature.)1Sheynkin, Y., et al., "Protection from scrotal hyperthermia in laptop computer users," Fertility and Sterility, February 2011; 92(2): 647–651. Condition gt requires numbers instead of "null" and "0" (a) If we…
