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1.) Your statistics instructor claims that 60 percent of the students who take her Elementary Statistics class go through life feeling more enriched. For some reason that she can't quite figure out, most people don't believe her. You decide to check this out on your own. You randomly survey 64 of her past Elementary Statistics students and find that 34 feel more enriched as a result of her class. Now, what do you think? 2.) A Nissan Motor Corporation advertisement read, "The average man's I.Q. is 107. The average brown trout's I.Q. is 4. So why can't man catch brown trout?" Suppose you believe that the brown trout's mean I.Q. is greater than four. You catch 12 brown trout. A fish psychologist determines the I.Q.s as follows: 5; 4; 7; 3; 6; 4; 5; 3; 6; 3; 8; 5. Conduct a hypothesis test of your belief. "se a level of 5% unless otherwise stated. If the sample size is less than n=30, use a "t" distribution instead of "Z." Do not compute p-value for "t"distribution problems. Just compare the test value of "t" with the critical value corresponding to the given level." Basically, all work needs to be shown. No using calculators for computation.
The further the hypothesized mean is from the actual mean the lower is the power of the test. The manager of the quality department for a tire manufacturing company wants to know the average tensile strength of rubber used in making a certain brand o..
A population proportion is to be estimated. Estimated the minimum sample size needed to achieve a margin of error E=0.01 with a 95% degree of confidence.
A bird lands on a power line of length L
Do exchange students like these who go to college in Canada fall in love more often than those who complete their studies in their country of origin -
single sample hypothesis testing z-tests1. for the population at large test scores on the wechsler intelligence scale
Compute the single-sample z-test to see if caffeine reduces dreamtime. Test the null hypothesis at the .05 level of significance.
What type of variables you have. Qualitative or Quantitative and indicate what type of measurement scale is being used.
The following data shows the position (x), the speed (v), and the deceleration (v2) of a car from the moment that driver hit the break until the moment that the car came to a stop. Required: Please utilize an Excel spreadsheet to find the trend of de..
If a person bought 1 share of Google stock within the last year, what is the probability that the stock on that day closed at less than the mean for that year? Hint: You do not want to calculate the mean to answer this one. The probability wou..
Are they weak or strong correlations - what is the significance value and what does the significance value reveal about the data we have used?
How would you define research? What is the purpose of business research? How has the Internet changed the quality and quantity of research?
1 the test averages for 40 students are listed below. use 8 classes not bins to construct a frequency distribution
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