# Question

An industrial concern has experimented with several different mixtures of the four components—magnesium, sodium nitrate, strontium nitrate, and a binder—that comprise a rocket propellant. The company has found that two mixtures in particular give higher flare-illumination values than the others. Mixture 1 consists of a blend composed of the proportions .40, .10, .42, and .08, respectively, for the four components of the mixture; mixture 2 consists of a blend using the proportions .60, .25, .10, and .05. Twenty different blends (10 of each mixture) are prepared and tested to obtain the flare-illumination values. These data appear here (in units of 1,000 candles).

a. Plot the sample data. Which test(s) could be used to compare the mean illumination values for the two mixtures?

b. Give the level of significance of the test and interpret your findings.

a. Plot the sample data. Which test(s) could be used to compare the mean illumination values for the two mixtures?

b. Give the level of significance of the test and interpret your findings.

## Answer to relevant Questions

Refer to Exercise 6.60. In exercise Instead of conducting a statistical test, use the sample data to answer the question, what is the difference in mean flare illuminations for the two mixtures? Defining the Problem (1). Lead is an environmental pollutant especially worthy of attention because of its damaging effects on the neurological and intellectual development of children. Morton et al. (1982) collected data on ...Use the results of the simulation study, summarized in Table 7.2, to answer the following questions. a. Which of skewness or heavy-tailedness appears to have the stronger effect on the chi-square tests? b. For a given ...A wildlife biologist was interested in determining the effect of raising deer in captivity on the size of the deer. She decided to consider three populations: deer raised in the wild, deer raised on large hunting ranches, ...A school district in a midsized city currently has a single high school for all its students. The number of students attending the high school has become somewhat unmanageable, and, hence, the school board has decided to ...Post your question

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