Entries by Hannah Wangui

When should researchers reject the null hypothesis?

Question When should researchers reject the null hypothesis?a) if the population mean and the sample mean are not the same b) if the test statistic is less than 5 c) if the values seem different to an expert d) if the probability of obtaining the results by chance is lower than the nominal alpha level […]

 

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incoming freshmen and graduating seniors

Question Researchers are comparing the intelligence levels of incoming freshmen and graduating seniors. Assuming that there is not a systematic difference in intelligence levels between the two groups and researchers reject the null hypothesis, they have committed: a) Type 3 error b) Type I error c) Type II error d) no error   Looking for […]

 

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z= (20-30)/10z= -1p(z< -1) = 0.1587 = 15.87% I am stuck after I calculate z= -1

Question z= (20-30)/10z= -1p(z< -1) = 0.1587 = 15.87% I am stuck after I calculate z= -1 I do not know what to do to get 0.1587. Can you explain that step.   Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code “Newclient”

 

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Hello can you help explain the next step

Question Hello can you help explain the next step. (10-30)/10 = -20/10 = -2  Z= (50-30)/10 = 20/10 = 2. I am stuck after this point. I need to find the difference between 1- and 50. Thank you.   Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code “Newclient”

 

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