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In a normal population with sigma=20, a random sample of size n gave X(mean)=56.53. At the 5% significance level, make a two-tailed test of the null hypothesis mu=50, when (a) n=24 (b) n=36
In each case report the P value
A certain component is critical to the operation of medical device and must be replaced immediately upon failure. If the mean lifetime of this type of component is 100 hours and its standard deviation is 30 hours, how many of these components must..
To determine whether the mean is greater than 16 ounces using large sample test.
The topic I am treating now is based on using qualitative analysis based on grounded theory to investigate the topic "Mature student studying at University".
We could then perhaps form a linear regression by charting the points of IQ for each person and their mother on a graph to determine if a correlation can be made between the IQ score of the individual and the IQ score of the mother. If the scores ..
Find the probability that the driver was intoxicated or the pedestrian was not intoxicated?
Nationwide, the average time until a electric utility customer service representative answers a call is 260 second. The Gigantic Kilowatt Energy Company rnadomly sampled 30 calls and found that, on average, they were answered in 227 second with a ..
They found that those with higher levels of cigarette use had lower GPAs, and vice versa. What can you rightfully conclude from this? Why? Be specific about what this kind of information may indicate and mean.
Why can not we just do several two sample tests like we did in the last week. In your own words explain briefly also tell us what these are and what did it mean.
Draw a tree diagram representing this experiment. Use this tree diagram to find the probabilities below.
Suppose {a_n} (n=1 to N) and {b_n} (n=1 to N) are two finite sequences of complex numbers. Let B_k = sum b_n (sum n=1 to k) denote the partial sum of the series sum (b_n) with the convention B_0=0.
According to Chebyshev's theorem, proportion of values from data set that is further than 2 standard deviations from the mean is at most?
Finding the probability of a pointer to land in a color among given three colors.
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