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The Healthwise Company produces a variety of exercise equipment. Healthwise management is very pleased with the increasing sales of its newest model of exercise bicycle. The sales during the last two months have been 4,655 and then 4,935. Management has been using exponential smoothing with trend, with a smoothing constant of α = 0.1 and a trend smoothing constant of ß = 0.2, to forecast sales for the next month each time. The forecasts for the last two months were 4,720 and then 4,975. The last estimate of the trend factor was 240. Calculate the forecast of sales for next month. (Use hand calculations rather than an Excel template)
Suppose that a guest claims that she played the slot machine 5 times and hit the jackpot twice. Find the probability of exactly 2 jackpots in 5 trials.
A bowl contains R red and W white chips. Suppose N chips are drawn without replacement from the bowl.
Critically illustrate out the characteristics of a standard normal distribution? Can two distributions with the same mean and different standard distributions be considered normal?
A tank contains 1320L of pure water.A solution that contains .o1kg of sugar per liter enters a tank at the rate 3L/min The solution is mixed and drains from the tank at the same rate.
To compare the effectiveness of three types of pain relievers, a homogeneous group of 22 students were divided randomly into three groups, and each group took one of three pain relievers for a period of 2 weeks.
Interpret the following computer cross-tab output including a X2 test. Interpret the computer cross-tab output, including a Chi-square test.
broke amp down has several hundred machines in its large manufacturing facility as it uses the pwp concept
The nation health department has concerns with the chlorine level of 0.4% mg/mL at a local water park raises to unsafe level.
Suppose that you collect data on apartment prices in Tempe. You look at 41 different apartment and find a mean of 757 and a standard devaluation 156.7. Construct a 95% confidence interval for the mean apartment price. That interval is? Please show..
What is the difference between a statistically significant result and a clinically or "real world" significant result? Give examples of both. What is NHST? Describe the assumptions of the model.
Suppose the systolic blood pressure Xand fasting blood sugar Y are jointly distributed as bivariate normal in some population with means 120 and 105, standard deviations 10 and 20, and correlation 0.7. Find the average fasting blood sugar of those..
Describe in some detail how a hypothesis test could be used in some real world context such as business, politics, church, Girl Scouts, school, or perhaps your place of work.
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