25 Apr A claim by a weight loss company is that on average the client will lose 10 pounds over the 1st 2 weeks
1. A claim by a weight loss company is that on average the client will lose 10 pounds over the 1st 2 weeks. 50 people who join the program are sampled; their weight loss is 9 pounds with a standard deviation of 2.8 pounds. Can we conclude at the .05 level that a person joining the program will lose less than 10 pounds?
2. Which of the following is a two-tailed test?
a. test to see if women smoke cigarettes more than men
b. a test to see if creatine promotes weight loss
c. a test to see if the mean age of day students is 22 years old
d. a test to see if GPA of low income students is lower than high income students
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