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An insecticide company exposes 10,000 cockroaches to its newest product, and exposes another 10,000 to their previous formula. When the test is completed, the researchers determine the mean elapsed time before a cockroach was killed by each product.
I. What is the population? II. What is the sample? III. Is the study observational or experimental? Justify your answer. IV. If observational, identify ALL variables. If experimental, identify ALL independent and dependent variables. V. For each of the variables identified in part IV, list which of the four levels/scales of measurement was used to obtain data on these variables? VI. Classify each of the variables identified in part IV as either attribute or numerical.
The null hypothesis is to be tested at 95% confidence. Determine the critical values for this test.
suppose the research team feels that more than 75 of airline customers will choose seat b as the most comfortable.
At 0.05 level of significance, is there evidence of significant relationship between age group and where people mainly get their news? If so, describe the relationship.
Conduct an analysis of four management journal articles, at least two of which must be peer reviewed. The following must be included in my analysis:
Normally distributed with an average of 125 minutes and a standard deviation of 18 minutes. What is the probability that a student taking this test will finish in 100 minutes or less?
Identify each of the random variables as continuous or discrete.
Management plans to sample 150 packages per week. What is the appropriate control chart?
What is the probability that exactly 7 cabinets are defective? What is the probability that there are more than 8 defective file cabinets?
The Niko electronics company just manufactured 5000 CDs, and 3% are defective. If 10 of these CDs are randomly selectedd for testing, what is the proability tha the entire batch is will be rejected.
using a 5 significance level test the claim that there is a gender differenceamong 2200 randomly selected males 72 wear
Use an appropriate graph to compare the distribution of systolic BP for 50-54 year olds with that for 60-64 year olds. Label the axes correctly, include unit of measure and provide an appropriate title. Include your name in the title of your graph. B..
If the rainfall was recorded on 20 (instead of 10) randomly selected days throughout the year, the standard error of the mean would be equal to?
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