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Stats homework on data 1. Out of the variables that you have coded, you will use the variable "age". You will estimate the population parameters from sample statistics.
2. For the variable of age (NOT grouped age), a. Calculate the Confidence Interval for 95% confidence level using both z distribution and t distribution.
b. Explicitly display how you have computed them (Do not explain, just show how you calculated them. Interpret the results that you have obtained based on z distribution and t distribution separately and have to put togther a presentation.
Identify the null and alternative hypothesis, test statistics, p-value(or range of P-value), critical value(s), and state the final conclusion that address the original claim.
assume that the actual surgery duration of this operation suit has a sample mean as xbar 70 minutes and standard
1. The convolution of two functions is defined by, (f*g)(x) = 1/√2? ∫ f(s) g(x-s) ds (integral is from -∞ to ∞)
Compute, for this (approximately) binomial random variable, the various probabilities that X = 2 out of the sampled n = 10 when p = 0.1, p = 0.2 and p = 0.3. What does this indicate to you about the "more likely" value of p, for the tiger ..
According to a well-known newspaper journal, 58.3% of the 222,900 households in particular county get the Sunday edition of local newspaper. Assume that random samples of 200 households are selected.
a social psychologist wants to know how long people will wait before responding to cries for help from an unknown
You don't have a population standard deviation but you have sample data. Calculate a sample mean and standard deviation and use the sample standard deviation value to complete the inferential test.
researchers were interested in the relationship between age and brain activity. they collected data on 20 subjects
a certain city divides naturally into ten district neighborhoods. how might a real estate appraiser select a sample of
question 1harryr.m.pittsthedirectoroflegalofcouncilofvancouverwillhavetomakeanumberoftoughdecisionsin the upcoming
The management of a department store is interested in estimating the difference between the mean credit purchases of customers using the store's credit card versus those customers using a national major credit card.
A Container has 6 blue marbles, 3 red marbles, and 6 white marbles. If 3 marbles are drawn with replacement, what is the probability that all three will be blue?
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