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A leading company chemically treats its product before packaging.The company monitors the weight of product per hour that each machine treats. A simple random sample of 25 one hour periods from one machine was taken. The results in kilos are shown below:
16591170841917218451175361859817253146241758916625110581663319718192191842117976179381680318830201092115115139199331821618523
(a) Can the company conclude that the mean kilo of product treated in one hour by this machine is more than 15,000? Use a 5% level of significance.
(b) What assumptions must be made for the test to be valid?
Is 0.21, the probability that his wife will vote in the referendum is0.28, and the probability that both the husband and wife will voteis 0.15. What is the probability that: at least one member of a married couple will vote?
Describe what you find then produce an ANOVA for the problem.
Regarding four scales referring to levels of measurement: Nominal, Ordinal, Interval and Ratio. Please pick one and discuss one level of measurement, and briefly describe how you would use that type of measurement in a study.
The batteries used in a digital watch have an operating life that is normally distributed. As sample of 18 batteries reveals a mean of 2.35 years and a standard deviation of 0.4 years.
Assume that in a hypothesis test with null hypothesis H 0 : μ = 14.0 at a = 0.05, that a value of 13.0 for the sample mean results in the null hypothesis not being rejected. That corresponds to a confidence interval result of:
Perform a hypothesis test by using.04 level of significance to find out if there is a difference between the population means.
Determine the most economical monthly shipping schedule. Provide a table showing the routes and total costs.
Develop a probability distribution for the number of students in the sample who watch soap operas.
What is the value of the test statistic? (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)
The weight of a small Starbucks coffee is a random variable with a mean of 360 g and a standard deviation of 9 g. Use Excel to find the weight corresponding to each percentile of weight.
In a study of the differentiation process, 26 juvenile animals were reared in smooth plastic trays, 18 were reared in trays containing several oyster chips, and 23 were reared in trays with only one oyster chip.
Calculate the margin of error that would be used to determine a 99% confidence interval for the mean pulse rate of all women.
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