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In a certain society of ancient people, a game with a bone having six sides with the pictures of six different animals was played. In tossing the bone it was found that the side containing the picture of the elephant came up twice as often as any other animal but that all the other animals came up equally often. Assuming there results were true, the probability of tossingan elephant is?
what is the required sample size is the error is to be less than 1/2 hour with a 95% level of confidence?
If desired confidence level is 95 percent, suitable critical value is?
What is the minimum-cost order quantity for the shoes? What are the annual savings of your inventory policy over the policy currently being used by Keith?
Construct a 95 percent confidence interval for the difference in proportions for the two populations represented by these samples.
Suppose you were preparing two-way tables of percentages for the following pairs of variables. How would you run the percentages?
Suppose Z has a standard normal distribution with a mean of 0 and a standard deviation of 1.0. One-half (50%) of the possible Z values are between ________ and ___________ symmetrically distributed about the mean.
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.
The Precision Scientific Instrument Company manufactures thermometers which are supposed to give readings of 0o C at the freezing point of water.
An analyst working at BC Statistics is compiling a report on the use of the internet at home. In 1997, 250 randomly selected people were asked about the average amount of time spent on the internet per week.
Which option produces the smallest risk of a Type I error?
Find the 90%, 95% and 99% confidence intervals for the proportion of all voters who favor the issue. How many more voters should we include in the sample if we need to reduce the margin of error by half?
Would a normal model be appropriate to describe the distribution of sale prices?
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