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1. In using the t distribution table, what value of t would correspond to an upper-tail area of 0.025 for 19 degrees of freedom?
2. In using the t distribution table, what value of t would correspond to an upper-tail area of 0.10 for 28 degrees of freedom?
The marks on a statistics midterm test are normally distributed with a mean of 78 and a standard deviation of 6. What is the probability that a class of 50 has an average midterm mark that is more than 75?
If 12 of them produce yr owers what is the probability that in the remaining 8 plants 4 produce yw owers, and 3 produce gr owers?
of all college degrees in the united states 50 are bachelors degrees 59 are degrees earned by women and 29 are
The Hammaker Company's newest product has had the following sales during its first five months: 5 17 29 41 39. The sales manager now wants a forecast of sales in the next month. (Use hand calculations rather than an Excel template)
1. If 8.78 g of CuNO3 is dissolved in water to make a 0.630 M solution, what is the volume of the solution? 2. How many milliliters of 11.5 M HCl(aq) are needed to prepare 520.0 mL of 1.00 M HCl(aq)?
the author recorded actual temperatures along with temperatures that were predicted 5 days earlier. results are listed
Can you think of an example where regression analysis can be used? How is regression analysis being used in a retail environment, or how should it be used?
Refer to Cash offers Problem 19.10. An analyst wishes to use each dealer's sales volume as a concomitant variable. The sales data (Xij) in hundred thousand dollars) follow.
The following data are the total 1-year return, in percent, for 10 midcap mutual funds:- Find the median and the 20th, 30th, 60th, and 90th percentiles.
Dunn Poitiac has compiled the following sales data regarding the number of cars sold over the past 60n selling days. Answer the following questions for the sales data shown.
The U.S. Food and Drug Administration (FDA) performed a study that compared the carbohydrate content (as a percentage of weight) of several major brands of corn and potato chips.
A survey last week revealed that out of 400 viewers contacted, 94 watched the news on WBEN. Can we conclude that the percent of viewers has increased? Use the 0.05 significance level.
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