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Assume that the smiling time of eight-week old babies, in seconds, follows a uniform distribution between 0 and 23 seconds, inclusive. This means that any smiling time from 0 to and including 23 seconds is equally likely.
Let X = length, in seconds, of an eight-week old baby's smile.
Find the 90th percentile for an eight week old baby's smiling time.
What percentage of bottles can we expect to have a volume less than 32 oz?
Would the null hypothesis be accepted or rejected in this case?
A simple random sample of 1000 Americans found that 61% were satisfied with the service provided by the dealer from which they bought their car.
Determine the probability of choosing at random license plate which ends in the even number?
Sales manager wishes to award sales representatives who earn the largest commissions a bonus of= $1,000 .He can award bonus to 20% of representatives. Determine cutoff point between those who earn bonus and those who don't?
If random sample of thirty six customer transactions points out that sample mean withdrawal amount is $172, is there evidence to think that population mean withdrawal amount is no longer $160? Determine the mean of data above?
Which of the following events are disjoint and What proportion of the females rated their intelligence less than 7.
Compute the sample variance and the sample standard deviation for these data (to 2 decimals).
Compute mean and standard deviation for sample of N = 8 females and sample of N = 8 for males.
Using an alpha level of 0.05, please use SPSS to perform a one-way ANOVA and then determine whether the data below provide evidence for Theory A, Theory B, or Theory C. In other words, is one theory stronger than the others?
Assume the data for the three groups are independent and the data are approximately Normal. The P-value is less than 0.01. The correct conclusion is that
Which of these variables are discrete and which are continuous random variables?
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