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Q1) Five sided die is tested for claim of being "fair". Results of multiple tosses are shown in table below. Use 10% significance level to find out if the die is fair.
Face Value
1
2
3
4
5
Frequency
21
25
27
24
28
a) In mathematical form, state the null and alternate hypothesis.
b) Find out the expected frequency of the categories.
c) Compute is the test statistic
d) Find out is the critical value
e) Draw suitable distribution curve indicating position of the TS and CV
f) What do you conclude about given claim comparing results from parts c) and d)
The best estimator or appreciative of the population proportion is 0.45. How large must the sample be?
Mean threshold values and standard deviations for the three groups are given below. Normal probability plots showed the three populations were well approximated by the Normal distribution.
Suppose it costs $25 per student for the administrators to provide the course materials.
At a = 0.05, can you reject claim that at least 52% of adults are more probable to purchase a product when there are free samples?
To give 98% confidence interval for population mean μ, you would use critical value.
A manufacturer of dodge balls uses a machine to inflate its new balls to a pressure of 13.5 pounds (σ =0.1). When the machine is properly calibrated, the mean inflation pressure s 13.50 pounds, but uncontrollable factors can cause the pressure of ..
Now he wants to know if there is a difference between the three formats. Is there?
Assume that preparation D was a placebo. Use the Scheffe's procedure to compare the average response of A, B, C, and E to the response for D.
If the amount of cosmic radiation to which a person is exposed while flying by jet across the US is a random variable having the normal distribution with µ=5.35 mrem, and σ = 0.59 mrem.
Compute the value of the proportion of the population.
Illustrate what does weighting add to usefulness of moving averages and explain how is it done. The yield on a thirty year treasury note at the end of every year since 1990 is recorded below.
The mean of a standard normal probability distribution.
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