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What type of data would you obtain from a rating scale? Please prove an application/example in your response of how this instrument could be used. For what population would you use a graphical rating scale?
What is the best predicted IQ of the wife, given that the husband has an IQ of 105 ? Use a significance level of 0.05.
The length of a Colorado brook trout is normally distributed. What is the probability that a brook trout's length:
The quality-control manager at a light bulb factory needs to determine whether the mean life of a large shipment of light bulbs is equal to 375 hours. The population standard deviation is 100 hours.
According to a report by Scarborough Research, the average monthly household cellular phone bill is $73. Suppose local monthly household cell phone bills are normally distributed with a standard deviation of $11.35.
37 percent of managers have MBA degrees. Using probability formulas. Determine the proportion of employees who are managers and have MBA degrees.
Find the roots of the quadratic equation:z^2-4z-12=0. (If there is more than one root, separate them with commas.)
To investigate he selects a sample of eight weeks and determines the number of new cars sold and the number of sales people on duty for that week. a) What are the dependent and independent variables?
Probability of Winning the Lottery: Because the California Fantasy 5 lottery is won by selecting the correct five numbers
Determine whether the method of delivering teaching influences adherence with antiretroviral therapy.
If 1.5 million X-Games were sold over the holidays, determine an interval for the number of defectives in sales. 12,184 to 32,816.
What are independent samples? What is a pooled estimate of variance and why do you need to calculate it? When do you use a dependent versus an independent sample t test?
At.05 level of significance, is there evidence to propose that mean life length of batteries produced by this manufacturer is more than 400 hours?
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