Consumer reports health study
A Consumer Reports Health study upon arthritis drugs takes in consideration cost. Cost is _________.
A. Is an ordinal variable
B. Is an irrelevant variable
C. Is a quantitative variable
D. Is a nominal variable
E. Is a categorical variable
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A computer manufacturer is having quality control issue with one of its notebook computers - 10% of the units are inoperable upon arrive to the customer.
According to the FedSmith.com, the average salary for federal employee in 2012 was $74,804. Suppose the population standard deviation is $15,300. A random sample of 34 federal employees is selected.
The National Center for Health Statistics reported that the 34% of Americans were obese recently. The Center for Disease Control determined that obese people spend average of $1,429 more medical goods and servies than non-obese people.
The scientist determining the DO levels later remembered that same ten sites were employed for sampling before and after weed removal. Is there significant difference now?
To estimate her breathing rate, Debra divides up her day in three parts: morning, afternoon, and evening. She then measures her breathing rate at 4 randomly chosen times throughout each and every part of the day. What kind of sampling is used?
A researcher is conducting the study upon eating disorders. Using a list of recent participants in online Weight Watchers program, she randomly chooses a name from the alphabetized list. She then chooses every tenth person from that point on to in
Management at the large multinational corporation would like to survey its employees about the level of interest in combing flexible work schedules with telecommuting from home.
Find out all joint probabilities listed below from the following information:
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