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If the probability of success is 1/100, how many trials are necessary in order that probability of at least one success is greater than 1/2?
Considering the sample method used, does the hypothesis test from Part (a) appear to be valid d) Given that the size of the sample is extremely large, can this sample size compensate for a poor method of sampling.
An automobile manufacturer would like to know what proportion of its customers are not satisfied with the service provided by the local dealer. The customer relations department will survey a random sample of customers and compute a 99% confidence..
Assuming that the life of bulbs follow Normal distribution, what is the probability that a randomly selected bulb will: Fail within 1200 hours? Survive between 1350 and 1650 hours?
How would you communicate this information to the Vice-President of Human Resources in non-statistical language.
Company A is hoping to expand its operations and a small group of investors is visiting next week. You are tasked with the duty of explaining how Company A uses this information from a linear programming model to optimize its shipping.
A manager wishes to find out whether there is a relationship between the number of radio ads aired per week and the amount of sales of a product. the data for the sample are shown below?
What type of research uses numeric measurement data? What type of research uses a research hypothesis?
The president of the American Insurance Institute wants to compare the yearly costs of auto insurance offered by two leading companies.
in an experiment to study the relationship of hypertension and smoking habits the following data are collected for 180
Calculate the mean and the standard error of the sampling distribution of the sample means. Also, find the mean and standard error of the sampling distribution for samples of size 5.
Coke cans: n=36, mean of values in sample = 12.19 oz., s= 0.11 oz. Test the claim that the mean equals 12 oz. Use a significance level of alpha = 0.02.
The distance travelled (in km) by a courier service motorcycle on 40 trips were recorded by the driver. Define the random variable and the data type.
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