A statistical program is recommended. A 10-year study conducted by the American Heart Association provided data on how age, blood pressure, and smoking relate to the risk of strokes. Data from a portion of this study follow. Risk is interpreted as the probability (times 100) that a person will have a stroke over the next 10-year period. For the smoker variable, 1 indicates a smoker and 0 indicates a nonsmoker.   --Using age, blood pressure, and whether a person is a smoker, develop an estimated regression equation that can be used to predict risk. Use x1 for age, x2 for blood pressure, and x3 for whether a person is a smoker. (Round your constant term to one decimal place and coefficients to three decimal places.)

According to a retail​ organization, holiday shoppers spent an average of $935.58 over the Thanksgiving weekend in 2016. The accompanying data show the amount spent by a random sample of holiday shoppers during the same weekend in 2017. ​$1,029 ​$875 ​$969 ​$838 ​$825 ​$813   ​$962 ​$1,032 ​$990 ​$996 ​$921 ​$664   ​$1,013 ​$1,030 ​$979 ​$878         Complete parts a through c.   Test the hypothesis that shoppers spent less than an average of $935.58 over the Thanksgiving weekend in 2017 using α=0.05.

The average monthly grocery bill for an individual is normally distributed with a mean of $85 and a standard deivation of $20.   If you select 4 individuals, what is the probability that their mean grocery bill is between $50 and $65?

Using the same anti-venom study, answer the following questions. A study was done on children (6 months to 18 years of age) who had (nonlethal) scorpion stings. Researchers wanted to know the effectiveness of a new anti-venonm. Each child was randomly assigned to receive a shot of the anti-venom or a placebo shot. Researchers recorded whether or not their condition improved over the next four hours. a. Identify the population for the study. b. Identify the sample for the study. (HINT: See #1) c. Was this an observational study or a controlled experiment? Explain how you know. d. Assuming the rest of the study was well-designed, use your answers to discuss whether it would be reasonable to conclude that the new anti-venom is effective at treating nonlethal scorpion stings in children. For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). TTTTParagraph Arial 3 (12pt) 三,三,T. 回i:公 E=E= = T T, U HTML CSS O Mashups

. The number of death due to diabetes and kidney disease for an American during 2015 is respectively  68,500 and 42,100. What is  the relative frequency probability of death due to diabetes for an American during 2015? How much greater is the risk of death due to diabetes than the risk of death due to kidney disease?

In a study examining the relation of math ability to the belief that math ability was innate, the belief was considered the predictor variable. The researcher hopes to find a correlation between the participants’ math ability and their belief that math ability is innate.  The scores for the three participants are shown below.   The group that believed that math is NOT innate scored 66, 70, 50.   The group that believed that math IS innate scored 7, 4,10.                               what are the mean and SD for each group?

A researcher conducted a study on 241 participants to see which plant color they were most likely to select. Using the chart below, what is the probability that someone would choose a plant that wasn't green or red? Plant Color Green Pink Red 50 Frequency 20.74% 100 Purple 20 71

Use the following information to answer the question. Many couples believe that it is getting too expensive to host an "average" wedding in the United States. According to the website www.costofwedding.com,theaveragecostofaweddingintheU.S.in 2009 was $24,066. Recently, in a random sample of 40 weddings in the U.S. it was found that the average cost of a wedding was $23,224, with a standard deviation of $2,903. On the basis of this, a 9 5% confidence interval for the mean cost of weddings in the U.S. is $22,296 to $24,152. Does the confidence interval provide evidence that the mean cost of a wedding has decreased? Explain your reasoning.

You read that a study was conducted as a 3 x2 ANOVA. This study had how many independent variables?   Question 12 options:   1   2   5   6

Use the three-read strategy to understand the following exercise from a statistics textbook, and then proceed to complete the exercise. Suppose that in a study to determine if hormone therapy increases risk of venous thrombosis in menopausal women, each person in a sample of 589 women who had been diagnosed with venous thrombosis was classified according to hormone use. Each woman in a sample of 2,243 women who had not been diagnosed with venous thrombosis was also classified according to hormone use. Data from the study are given in the accompanying table. The women in each of the two samples were selected at random from patients at a large HMO in a certain U.S. state.   Current Hormone Use None EsterifiedEstrogen ConjugatedEquineEstrogen Venous Thrombosis 382 86 121 No VenousThrombosis 1,439 505 299 Is there convincing evidence that the proportions of those who would fall into each of the hormone use categories are not the same for women who have been diagnosed with…