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Seventy five percent of youths ages 12-17 have a systolic blood pressure lower than 136mm of mercury. What is the probability that a sample of 12 youths of that age group will include:
a. exactly 4 who have a blood pressure greater than 136
b. no more than 4 who have a blood pressure greater than 136
c. at least 4 who have a blood pressure greater than 136.
Select the level of significance, and determine critical, ZCR value.
Do hotel managers on average vary significantly in femininity score from men in general?
question a dam can be lowered by 4 meters using spillway a in 4 hours or by spillway b in 6 hours also lowering the
Test the hypothesis that the annual incomes of Teachers in areas of more than 500,000 are significantly more than those in areas of less than 100,000. Use the 5% level of risk.
A report states that 46% of home owners have a vegetable garden. How large a sampl.e is needed to estimate the true proportion of home owners who have vegetable gardens to within 4 percentage points with 95% confidence?
question the water sports company soon will be producing and marketing a new model line of motor boats. the production
When the level of confidence and sample size remain the same, a confidence interval for a population proportion π will be __________ when p(1-p) is larger than when p(1-p) is smaller.
If the pilot plant fails, Rob feels the chance of the full-scale facility succeeding is only 20%. The probability that the pilot plant will succeed is estimated at 0.6. Structure this problem with a decision tree and advise Rob what to do.
Dinner B which costs $135.30 for dinner submitted by salesperson with mean cost of $117.50 and standard deviation of $30 per dinner?
Show that if the roots of the polynomial p are all real, then the roots of p' are all real. If, in addition, the roots of p are all simple, then the roots of p' are all simple.
The purchase of a coin-operated laundry is being considered by a potential entrepreneur. The present owner claims that over the past 5 years the average daily revenue has been $675 with a standard deviation of $75.
Consider a machine that fills soda bottles. The process has a mean of 15.9 ounces and a standard deviation of 0.06 ounces. The specification limits are set between 15.8 and 16.2 ounces. a) Compute and interpret the machine's Cp
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