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What variables that affect blood pressure might confuse the comparison of average blood pressures for users and nonusers? That is, what factors affecting blood pressure might differ for users and nonusers. Explain. can someone help me with this problem?
You roll two fair dice, one red and one green. What is the probability of getting a number less than 5 on both?
Use SPSS to make a scatterplot between stress and coping, and then add the fitted regression line to the plot. Mark both intercept and slope on the plot (You may consider to change the default X scale in SPSS)
Data are recorded on effects of each drug. Is research division by using dependent or independent samples? Explain why?
Discuss where this common statistical analysis technique might be useful in your business. Is it being used already? If not, how will you help introduce others to it?
Suppose that these 49 patients constitute the random sample, and that population is normally distributed with standard deviation of 10. Calculate the 95% confidence interval for heartbeats per minutes in population.
Can you conclude that information in article is untrue? Use 0.05 significance level. Find out p-value and explain its meaning.
Calculate the difference in the average "clutter" between network and TV.
The mean diameter is 124 millimeters and the standard deviation is 5 millimeters. Find the probability that the diameter of a selected ebaring is between 128 and 132 millimeterds.
The null hypothesis is to be tested at the 10% level of significance. The critical value from the table is:
A CBS News/New York Times poll found that 329 out of 763 adults said they would travel to outer space in their lifetime, given the chance. Estimate the true proportion of adults who would like to travel to outer space with 92% confidence.
A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fail on a 1-hour flight is .02.
The liquid chlorine added to swimming pools to combat algae has a relatively short shelf life before it loses its effectiveness. Records indicate that the mean shelf life of a 5-gallon jug of chlorine is 2,10 hours (90 days).
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