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Let's say you're a researcher who wants to study the relationship between the age of a child in foster care and the level of attachment he or she displays towards a foster parent, based on a standardized attachment test. Provide an example of a one-tailed hypothesis for this relationship. Then provide an example of a two-tailed hypothesis for this relationship form a null hypothesis based on the two-tailed hypothesis.
One Tailed:
Two Tailed:
Null:
Now let's say you decide to test the null hypothesis you wrote. You decide to set alpha at .05. You run a stats test and come up with a p-value of .037. Would you retain or reject the null hypothesis?
If you reject the null hypothesis you wrote in the previous question, what does this mean?
The following data give the winning proportions of the top six football teams from each of the two conferences of the NFL.
IQ scores but have been standardized so that complete sample has mean of M = 10 and standard deviation of s = 2. Compute mean and the standard deviation for the sample of n = 8 females and for sample of n = 8 males.
Assume that women's heights are normally distributed with a mean given by mu equals 63.3 in, and a standard deviation given by sigma equals 3.1 in. Complete parts a and b.
Decrease your sales price by $5 in order to increase sales by 5,000 units. Which of the above alternatives would your choose to increase profits?
Morning the office you are monitoring has eight office visits on the schedule. What is the probability of the following - Compute the probability of success on a single trial. Round your answer to three decimal places.)
Use the SPSS output to determine if there is sufficient evidence to conclude that Sally bakes a better pie than Pat (i.e., the average rating for Sally at her church is higher than the average rating for Pat at her church).
Use StatKey or other technology to generate a bootstrap distribution of sample means and find the standard error for that distribution. Compare the result to the standard error given by the Central Limit Theorem, using the sample standard deviatio..
an exam was given to a random sample of 360 new recruits. px is the probabiity of new recruits with a score of x. the
A market research field worker needs to interview married couples about use of a certain product.- Are you surprised by the numerical answer you obtained?
the variance in drug weights is critical in the pharmaceutical industry. for a specific drug with weights measured in
1. distinguish between classification and tabulation of data. what are the types of classification of data?2. calculate
In a certain class, midterm score averages out 70 with an SD of 15, as do scores on the final. The correlation between midterm scores and final scores is about 0.40. The scatter diagram is football-shaped.
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