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It has been reported that 48% of teenagers play video games on their phones. A random of 60 teenagers is drawn. Find the probability that the proportion of teenagers in the sample who play videos games on their phone is less than 0.490. Write only a number as your answer. Round to 4 decimal places.
below are data showing the results of six subjects on a memory test. the three scores per subject are their scores on
How does the shape of the quantile plot affect your interpretation of the results?
Evette has 41 1/2ft. of string. She wants to cut it into pieces 3 3/4ft. long. How many pieces of string will she have? how much string remains, if any?
In how many different ways can 5 songs be arranged if a particular song must be the first on the EP?
suppose the proportion x of surface area in a randomly selected quadrat that is covered by a certain plant has a
Estimate the difference in the proportions favoring the proposition and place a 2-standard-deviation bound on the error of estimation.
For the other 25 percent of the population, the drug has no effect on colds. If an individual tries the drug for a year and has 2 colds in that time, what is the probability that the drug is beneficial to that individual?
A significance test for comparing two means gave t = -2.18 with 10 degrees of freedom. Can you reject the null hypothesis that the μ's are equal versus the two-sided alternative at the 5% significance level?
Conduct a hypothesis test to determine whether there is any evidence that the sample proportion of defective lenses is different for Process A and Process B. Use a = 0.05.
After taking a random sample of 25 "Fun-Size" candy bars, some sugar-happy statistics students calculate that a 90% confidence interval for the true mean weight of the candy bars is 0.992 to 0.998 ounces. What are the point estimate and margin of ..
conduct the hypothesis test and prove the test statistic critical value and p-value and state the conclusion.a package
an advertising company is interested in determining if there is a difference in the mean sales that will be generated
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