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- The following equations were estimated using the data in ECONMATH, with standard errors reported under coefficients. The average class score, measured as a percentage, is about 72.2; exactly 50% of the students are male; and the average of colgpa (grade point average at the start of the term) is about 2.81. score = 32.31 + 14.32 colgpa (2.00) (0.70) n = 856, R² = .329, R = .328. 29.66 + 3.83 male + 14.57 colgpa score = (2.04) (0.74) (0.69) n = 856, R? = .349, R = .348.Devan X O Mail x G Gran X Horn X Grad x zy Secti x MUh-c X b Ansv X Com, X ACT s.com/zybook/QNT_375T 55007971/chapter/5/section/5 > QNT/375T: Business Data Analytics home > thesis test for a population mean E zyBooks catalog 9846.1423376.gx3zay Jump to level 1 A auto maker is interested in information about how long transmissions last. A sample of transmissions are run constantly and the number of miles before the transmission fails is recorded. The auto maker claims that the transmissions can run constantly for over 150,000 miles before failure. The results of the sample are given below. Miles (1000s of miles) Mean 151.2 Variance 17.22 Observations 44 Hypothesized Mean 150 df 43 t Stat P(T<=t) one-tail 1.889 p= Ex: 1.234 0.033 t Critical one-tail 1.681 -2 -1 P(T<=t) two-tall t Critical two-tail 0.066 t = Ex: 1.234 2.017 Confidence Level(95.0%) 1.129 What condition is met for the use of a t-distribution? Pick n = Ex: 5 元=Ex12 Degrees of freedom = Ex: 5 s = Ex: 1.234 F11 pause break prt…(1 point) Let Y be a Binomial variable counting the number of successes in 70 independent trials where the probability of success at each trial is 0.57; that is, Y - Bin(70, 0.57). Part a) Use the pbinom function in R to find P(35 0.25.
- Úse diFferentiais to approximato VTG.a (use FQ)= FVx) %3DStudy Finds Benefit of Tablet Every Other. Day Is Much Greater Than Expected Ву HAROLD M.SCHMECK Jr. A major nationwide study shows that a single aspirin tablet every other day can sharply reduce a man's risk of heart auack and death from heart at- tack. The lifesaving effects were so dra- matic that the study was halted in mid- December so that the results could be reported as soon as possible to the par- |ticipants and to the medical profession in general. The magnitude of the beneficial ef- fect was far greater than expected, Dr. Charles H. Hennekens of Harvard, principal investigator in the research, said in a telephone interview. The risk of myocardial infarction, the technical name for heart attack, was cut aimosi in half. 'Extreme Beneficial Effect A special report said the results showed "a statistically extreme benefi- ciał effect" from the use of aspirin. The report is to be published Thursday in The New England Journal of Medicine. In recent years smaller studies have…True or false, the mean of a normally distributed variable can be any real number. A) True B) False
- scgi-s/1st.exe/10_u-IgNslkr7j8P3/H-1BSmSHQ/fbH2xfgdyVelz24_x5rbgiCikTAtqABbYc548rD-S10BrkKJTgeofGCtYPjecUu9rVTYYPrkHHizQqHrFAGkfKvo? 1oBw7QyjibavbSPXbx-YCjsh_7mMmrq#item ans Mirra Healthcare = User Portal - Call C... O RATIONAL EXPRESSIONS Solving a work problem using a rational equation hours CLAIMS ADJUDICA... Explanation Check It takes an older pump 5 times as long to drain a certain pool as it does a newer pump. Working together, it takes the two pumps 2 hours to drain the pool. How long will it take the newer pump to drain the pool working alone? Do not do any rounding. X Medicare Medicaid Ultimate Health Pla... NPPES NPI Registry New Time Clock S 1/3 Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Deminika V Español ? 8 D Aa Terms of Use | Privacy Center | AccessibilityThe edge roughness of slit paper products increases as knife blades wear. Only 1% of products slit with new blades have rough edges, 3% of products slit with blades of average sharpness exhibit roughness, and 5% of products slit with worn blades exhibit roughness. If 25% of the blades in manufacturing are new , 60% are of average sharpness, and 15% are worn , what is the proportion of products that exhibit edge roughness? Let R = edge roughness N = new blades A = blades with average sharpness W = worn blades What are the mathematical notation for the following values: 1% = 3% = 5% = 25% = 60%= 15% = Express the question in mathematical notation; The proportion of products that exhibit edge roughness* = *Express in rational number with 2 decimal places.Jamal has a utility function U= w!/2_where W is his wealth in millions of dollars and Uis the utility he obtains from that wealth. In the final stage of a game show, the host offers Jamal a choice between (A) $4 million for sure, or (B) a gamble that pays $1 million with probability 0.6 and $9 million with probability 0.4. a. Graph Jamal's utility function. Is he risk averse? Explain. b. Does A or B offer Jamal a higher expected prize? Explain your reasoning with appropriate calculations. (Hint:The expected value of a random variable is the weighted average of the possible outcomes, where the probabilities are the weights.) c. Does A or B offer Jamal a higher expected utility? Again, show your calculations.
- Dave is driving on an American Interstate highway which has a speed limit of 55 mph. At 2 pm he is at milepost 110 and at 5 pm he is at milepost 290. Is this enough evidence to prove that Dave was speeding? Prove using the Mean Value Theorem.Plz all will rateSelect the appropriate null and alternative hypothesis for the following research question: Do people who live in a urban areas prefer to stream their tv/movies more than people who live in rural areas? phat1 = proportion of people who live in urban areas that prefer to stream tv/movies phat2 = proportion of people who live in rural areas that prefer to stream tv/movies O Null Hypothesis: People who live in urban areas prefer to stream their tv/movies less than people who live in rural areas i.e. phat1 = phat2 O Null Hypothesis: People who live in urban areas prefer to stream their tv/movies more than or equal to people who live in rural areas i.e. phat1 >= phat2 Alternative Hypothesis: People who live in urban areas prefer to stream their tv/movies less than people who live in rural areas i.e. phat1 < phat2

