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Below are two data sets. Using descriptive statistics, discuss the two data sets in relation to each other. Both data sets come from an operation where potato chips are being placed in small connivance store bags that are to hold 6.0 oz.
Data from Machine #1 Data from Machine #2
6.10 6.40
5.90 5.60
6.10 6.10
5.80 5.80
6.20 6.70
5.90 5.40
6.00 6.00
6.00 6.40
6.30 6.40
5.80 5.00
5.90 5.20
6.10 4.90
6.30 4.80
Estimate a test statistic for null hypothesis H0: μ = 30 against two-sided alternative hypothesis H1 : μ ≠ 30, and by plotting this on its reference distribution.
When investigating the distribution of a data set, which is more effective: a frequency distribution or a histogram? Why?
The sample data are summarized by the statistics n = 27, x = 4.6 years, s- 1.9 years.
Where should the warranty limits be set so that only 10% of the TVs need repairs at the manufacturer's expense?
If you wish to estimate a population mean with a sampling distribution error SE = 0.28 using a 95% confidence interval and you know from prior sampling that sigma^2 is approximately equal to 5.4, how many observations would have to be included in ..
Use the five steps of hypothesis testing to determine whether the observed differences in the number of activities in the following table performed by the three groups are statistically significant at the .05 level of significance. Clearly indicat..
The probability that the daily demand at this store is at least one and at most three is:
There were 25 subjects included in each of the combinations of gender and smoking status. One of the variables measured was the heart rate after six minutes of exercise. A two-way ANOVA is performed with the resulting ANOVA table given below
Explain what property associated with the Central Limit Theorem you consider the most important contribution, enabling the use of the normal distribution for sample means.
He argues that the regression effect says people who perform very poorly in their previous job tend to perform well in their next job. Is this what the regression effect says? Explain.
When sampling is done for the proportion of defective items in a large shipment, where the population proportion is 0.18 and the sample size is 200, what is the probability that the sample proportion will be at least 0.20?
Dinner B which costs $135.30 for dinner submitted by salesperson with mean cost of $117.50 and standard deviation of $30 per dinner?
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