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Question: Out of all the air-travel bookings in major airlines, at least 58% are said to be done online. A sample of 70 airlines revealed that 52% of bookings for last year were done online. State the null and alternative hypotheses and carry out the test at the 5% level of significance.
the ship is pushed through the water using an a-36 steel propeller shaft that is 8 m long measured from the propeller
1.an advantage of the permutation test over the t test for a difference in means is thata.it gives accurate p-values
Calculate 95% confidence intervals for the mean body temperature in each group and comment about the confidence intervals.
Technology on campus. Every 5 years the Conference Board of the Mathematical Sciences surveys college math departments. In 2000 the board reported that 51%.
questionabc company produces a line of internal winchester disks for pcs. the drives uses a 3.5 inch platter from an
What's the probability that no one will arrive in the next 10 minutes?- What's the probability that 2 or more people arrive in the next 10 minutes?
The mean age of a sample of 60 students from a class was found out to be 25.3 years. The variance in population age was 16 years.
What is the probability that a simple random sample of automobile insurance polocies will have a sample mean within 25.
Calculate the sample mean and the sample standard deviation to one decimal place using a TI-83+ or TI-84 calculator.
What is the difference between statistical significance and practical significance? What is a type I and type II errors in hypothesis testing? What would be examples of each? Explain
Consider an event that will either occur or not. For example, the event might be that California will experience a major earthquake in the next five years.
These individuals are then examined and categorized as to whether they have a heart disorder. The observed frequencies are as follows:
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