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At a certain college, it is estimated that at most 25% of the students ride bicycles to class. Does this seem to be a valid estimate if, in a random sample of 90 college students, 28 are found to ride bicycles to class? Use a 0.05 level of significance. Construct a 95% confidence intervale for the probability of college students' riding bicycles.
In a distribution of sentence lengths in months like the following: 6, 12, 10, 18, 24, 360; which statistic would a researcher not want to report?
a survey of 1373 parents and 1343 students in grades 6-12 regarding the importance of science and mathematics in the
a random sample of 100 credit sales in a department store showed an average sale of 120.00. from past data it is known
While some teenagers received no allowance, others reported receiving $200 per week. Based on this information, the mean allowance for U.S. teenagers is most likely 0 $50.
For each question, state whether the data collected are categorical or quantitative and indicate the measurement scale being used. What is the current Mileage?
poisson distribution in studying a rare disease researchers notice that there is a 1 in 1000 chance of a person
A person must score in the upper 2% of the population on an IQ test to qualify for member ship in Mensa, the international high-IQ society. If IQ scores are normally distributes with a mean of 100 and a standard deviation of 15, what score must a ..
when testing h0u gt u0 using confidence intervals if u is not contained in the confidence interval then we would a.
The management of White Industries is considering a new method of assembling its golf cart. The present method requires 42.3 minutes, on the average, to assemble a cart.
He can award a bonus to 20 percent of the representatives. What is the cutoff point between those who earn a bonus and those who do not?
A researcher is conducting proportionate stratified random sampling with a sample size of 250. Approximately how many people should be sampled from each stratum?
sales 2363 2.1 advertising - 279 price - 136 unemplpyment r2 .76what would be the expected unit sales when
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