A app.edulastic.com/student/assessment/6179c2021370b800083f6192/dass/6126d0f2fc36e40009ea5bfd/uta/6179c225f4 1e8a00099485da/itemld/Sed3437b03b7 ad09241b. Question 9/19 > NEXT A BOOKMARK A concert hall is in the shape of a rectangle. Its floor has a length of (+ 6) meters and a width of (2x – 3) meters. The expression below represents the area of the floor of the hall in square meters. (z + 6) (2r – 3) Write a simplified expression that represents the area of the floor of the concert hall in square meters. 5HOW HINT
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- I have the first two parts but can someone help find the claim at 0.01 significance level? Thanks!There's a new treatment for addiction and because resources are limited, a program decides it can offer it only to those people whose ASI scores are in the top 10% of scores. What raw score on the ASI would a person have to have to be eligible for the program?Suppose a group of researchers attempt to confirm the result of "Distractions in Everyday Driving," covered in News Story 5 "Driving while distracted is common, researchers say," by recreating the study. In a random sample or 240male drivers,102indicated they have experienced external distractions while driving. In addition, in a random sample of 270 female drivers, 98 indicated they have experienced external distractions while driving. Test whether the population proportion of male drivers experiencing external distractions while driving was greater than the population proportion of female drivers experiencing external distractions while driving. Use a .05 level of significance. A. What assumptions are required for conducting this test. B. State the null and alternative hypotheses (both mathematical notation and words) C. Calculate the test statistics (by hand) D. Give the P-value associated with the hypothesis test in part (a). E. State the conclusion, using p-value approach.
- A marriage counselor has traditionally seen the proportion pee of all married couples from her communication program can prevent divorce and 79%. After making some recent changes, The marriage counselor now claims that our program can prevent divorce is more than 79% of married couples. And a random sample of 230 married couples who completed her program, 194 of them stayed together. Based on this sample, is there enough evidence to support the marriage counselors claim at the 0.10 level of significance?Match the description of paired charctereristics in the answer bank to the most reasonable description of the correction between them.An environmentalist wishes to conduct a hypothesis test on the percentage of cars driven in a cities that are hybrids. Is it sufficient for him to use a simple random sample of 114 cars of hyper is currently a count for 8% of the car sales in the country, and he claims that the percentage of hybrids in the city is higher than that.
- A dentist office gives a survey to all wisdom teeth extraction patients asking them to rate the quality of their dental experience. One month after wisdom teeth extraction, the dentist contacts the patients again to ask if there were any complications from the extraction. Last year, the results of the surveys showed that of the patients who had a poor dental experience, 94% had post-extraction complications. What conclusion can be drawn from this study? Some patients who have a poor dental experience also have post-extraction complications. Most patients who have a poor dental experience also have post-extraction complications. Poor dental experiences cause post-extraction complications. Post-extraction complications cause poor dental experiences.In a survey by Bea et.al., it was found that 218 of 1,062 urban residents had a history of allergic disorder while 728 of 1,000 rural dwellers had no history of such disorder whatsoever. Using an alpha level of 0.10, determine if the proportion of urban and rural residents with a history of allergic disorder are different. 1st statement: The sample proportion of urban residents with history of allergic disorder is 20.53% 2nd statement: The sample proportion of rural residents with history of allergic disorder is 72.80% a. both are true b. both are false c. first is teue, second is false d. first is false, second is trueA seven-year medical research study reported that women whose mothers took the drugDES during pregnancy were twice as likely to develop tissue abnormalities that might leadto cancer as were women whose mothers did not take the drug.a. This study compared two populations. What were the populations?b. Do you suppose the data were obtained in a survey or an experiment?c. For the population of women whose mothers took the drug DES during pregnancy, asample of 3980 women showed that 63 developed tissue abnormalities that might leadto cancer. Provide a descriptive statistic that could be used to estimate the number ofwomen out of 1000 in this population who have tissue abnormalities.d. For the population of women whose mothers did not take the drug DES duringpregnancy, what is the estimate of the number of women out of 1000 who would beexpected to have tissue abnormalities?
- A seven-year medical research study reported that women whose mothers took the drugDES during pregnancy were twice as likely to develop tissue abnormalities that might leadto cancer as were women whose mothers did not take the drug.a. This study compared two populations. What were the populations?b. Do you suppose the data were obtained in a survey or an experiment?c. For the population of women whose mothers took the drug DES during pregnancy, asample of 3980 women showed that 63 developed tissue abnormalities that might leadto cancer. Provide a descriptive statistic that could be used to estimate the number ofwomen out of 1000 in this population who have tissue abnormalitiesA pharmaceutical company wants to test whether their the incidence of side effects (i.e. adverse events) differs between the treatment and placebo groups at the α = 0.05. Let p1 = the proportion of subjects in the treatment groups who experienced at least one adverse event and let p2 = the proportion of subjects in the placebo group who experience at least one adverse event. 8 out of 30 people in the treatment group experienced at least one adverse event and 5 out of 30 people in the placebo group experienced at least one adverse event. (d) Draw a picture of the distribution of the test statistic under H0. Label and provide values for the critical value and the test statistic, and shade the critical region. for the test statistic I got .9401 and for the critical value I did qnorm(.95)=1.6499. (e) Make and justify a statistical decision at the α = 0.05 level and state your conclusions in the context of the problem. for this question I wrote it would not be more extreme, you…A researcher hypothesized that people are more likely to be aggressive when they are criticized than when they are not. The researcher randomly assigned participants to one of two groups: 1) in group 1 participant's essay was given a negative rating, and 2) in group 2 participant's essay was given a positive rating. Then the researcher monitored how many loud blasts participants delivered in a confederate's earphones in the next room. One person dropped out of the study, so that there were 8 people in treatment condition 1 (n1 = 8) and 7 people in treatment condition 2 (n2 = 7). The alpha was .05. The mean number of blasts for Group 1 was 6.8 (SS = 80) and the mean number of blasts for Group 2 was 3.5 (SS = 78). What is the alternative hypothesis for this study? Is this a directional or non-directional hypothesis? The critical t is ___________. The calculated t is _______.