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A recent survey of gasoline prices indicated that the national avedrage was $4.098 per gallon. The Dallas Automobile Club claimed that gasoline in Texas was significantly lower than the national average. A survey covering 0 different suburbs in Dallas found the average price of gasoline to be $3.924 per gallon with a population standard deviation of $0.053. What critical value shoiuld be used to test the claim using a = 0.01?a) 1.26
b) 2.33
c) -1.26
d) -2.33
The distributor selects one cable at random from among all cables in stock. If the cable selected is found to meet the strength specifications, what is the probability that the cable was produced at Plant A?
Make a stem plot for the men height data. Calculate the five-number summary for the women.
What is the probability the average of the sample is more than $38000 and What is the standard deviation of the sample mean
Are you doubtful of any of these data points? if so why does there show to be a linear relation between degree of stenosis and nuber of reactive nuclei?
Find a 95% confidence interval for the population mean concentration of uric acid in this patient's blood. What is the margin of error?
Using this information, calculate Blpha risk (probability of Type II error) if the true population mean really is 81.
Compute the mode, median and mean for the college students and compute the mode, median and mean for the parents' data
Determine probability, P(Z
Suppose a simple random sample of 20 non-English student have an average math score on the SAT exam of 528. What are the appropriate hypotheses?
Develop a 95% confidence interval of the difference between the daily population means for the two airports.
Assume 1.5% of antennas on new Nokia cell phones are imperfect. For random sample of 200 antennas, determine the probability that: None of the antennas is defective.
What is the probability that a randomly selected monthly cell phone bill is more than $100?
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