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On the standardized spatial skills task, normative data reveal that people typically, get µ= 15 correct solutions. A psychologist tests n = 7 individuals who have brain injuries in right cerebral hemisphere. For following data, find out whether or not right-hemisphere damage results in significantly reduced performance on spatial skills task. Test with alpha set at .05 with one tail. Data are as follows: 12, 16, 9, 8, 10, 17, 10
A production line manager, J, is trying to design a manufacturing line, using the machines that her company already has. Based on the historical records
At a certain pizza parlor, 45% of the customer's order a pizza containing onions, 38% of the customer's order a pizza containing sausage, and 79% order a pizza containing onions or sausage
Which of the following statements is true regarding a nonparametric test? We assume that the data has been chosen from a normally distributed population
Find the value of x that corresponds to each of these standard scores z = -1.85.
Set up a hypothesis test. Is Charmers' truthful? Describe by working through hypothesis test.
X is a continuous random variable uniformly distributed on [20, 45] that is, the end points c = 20 and d = 45.
Calculate the z - scores for the three samples, compare the z score to the t-statistic, is the null hypothesis accepted or rejected?
Four percent of the customers of a store buy cigars. Half of the customers who buy cigars buy beer and one fourth of those who buy beer buy cigars. The table is given below:
Duracell Ltd claim that the life of their batteries in motorised soft toys is approximately normally distributed with a mean of 102.9 hours and a standard deviation of 16.5 hours.
A computer is used and it is found that the P-value = 0.0016. What can you state about the sample (independent or dependent) and what can you conclude about the evidence?
A business researcher uses two-way ANOVA in a report for a client. The researcher does not check the assumptions of using the technique.
Extrapolating this data by using the sum of squares method would further reveal any discretionary variances in relationship to the mean?
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