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Q1) Table below illustrates number of HDTVs sold at 3 chain stores owned by same company in the 4 quarters of last fiscal year. Process data by Excel using its two-way ANOVA without replication program.
Store 1
Store 2
Store 3
Quarter 1
69
121
103
Quarter 2
74
102
64
Quarter 3
65
212
126
Quarter 4
228
369
305
a) Test null hypothesis, H0: H0: m1 = m2 = m3 Describe what outcome of test tells you about either of the major effects.
In order to test the assumption of a Poisson distribution, a random sample of 150 ten-minute intervals was taken.
P(A 1 )= .20, P(A 2 ), and P(A 3 )= .40. P(B 1 I A 1 ) = .25. P(B 1 I A 2 ) = .05. P(B 1 I A 3 )=.10. Use Bayes' theorem to determine P(A 3 I B 1 )
For a normal distribution, the probability of randomly selecting a z-score greater than z = -2.00 is p = .0228.
Distinct random variable
Suppose each employee in the company receives a $3000 raise for next year (each employee's salary is increased by $3000). The interquartile range of the salaries will
A 95% confidence interval for the proportion of all adults who bought a lottery ticket in the past year is (assume Gallup used an SRS)
The lengths of pins produced by a machine follow a normal distribution with mean 2.54 cm and standard derivation 0.04 cm.
Interpreting confidence interval for the P-value. Give an appropriated response. A weight loss center provided a loss for 72% of its participants.
The City Transit Authority plans to hire 8 new bus drivers. From the group of 100 qualified applicants, of whom 55 are men and 45 are women, 8 names are to be selected by lot. Suppose that Mary and John Lewis are among the 100 qualified applicants..
Determine the percent of the days is the price between $38.00 and $40.00?
It has been claimed that women live longer than men; however, men tend to be older than their wives. Ages of sixteen husbands and wives from England were obtained. The null hypothesis of equality of means is rejected. What conclusion can be made f..
If we select one box of cereal at random from this population, what is the probability that it will weigh less than 915 grams?
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