Because each observation from a sample for the sign test must be assigned a plus or minus sign, this sampling distribution can be said to follow the binomial probability distribution.
Indicate whether the statement is true or false
Q. 2An Epson inkjet printer ad advertises that the black ink cartridge will provide enough ink for an average of 245 pages. Assume that this claim is accurate and that the standard deviation for this population is 15 pages.
A random sample of 33 customers was surveyed about the number of pages they were able to print with their black ink cartridges. What the probability that the sample mean will be 246 pages or less?A) 0.6480
B) 0.8729
C) 0.3520
D) 0.1093
Q. 3Weighted moving average is an example of a ________ forecasting technique.
A) smoothing
B) regression analysis
C) multiplicative decomposition
D) seasonal
Q. 4Steve's average golf score at his local course is 93.6 from a random sample of 34 rounds of golf. Assume that the population standard deviation for his golf score is 4.2. The 90 confidence interval around this sample mean is ________.
A) (89.0, 98.3)
B) (90.5, 96.7)
C) (93.2, 94.0)
D) (92.4, 94.8)
Q. 5Taylor's Mill is a neighborhood comprised of 185 homes. According to the website Zillow, the average market value of the homes in this neighborhood is 418, 300 with a standard deviation of 36,500.
What is the standard error for a random sample of 32 homes from this neighborhood?A) 4,153.87
B) 5,883.76
C) 6,452.35
D) 7,510.35
Q. 6Simple moving average is an example of a ________ forecasting technique.
A) smoothing
B) regression analysis
C) multiplicative decomposition
D) seasonal
Q. 7If the null hypothesis for the sign test is false, 50 of the population will fall below the median and 50 will fall above the median.
Indicate whether the statement is true or false
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