Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Western Australia is a state that occupies the western 32.9% of the land area in Australia, excluding the external territories. It is estimated to have about 2.6 million inhabitants. The state is very cautious in protecting its residents from the transmission of the Covid-19 infection. Hence, it imposed a tough regulation to close its borders from other states which had recorded an increased number in Covid-19 infection. The residents however have mixed reactions to the regulation. Some were supportive to the regulation. Others argue that opening the state border should be made a priority to boost the economy. A survey on the matter is conducted over 3,000 randomly selected residents where they are asked to cast their vote ('SUPPORT' or 'NOT SUPPORT' on the decision to remain in closing the border). 1,680 respondents stated 'SUPPORT' for the state to remain closed.
a) Suppose you were a data analyst working for the State Office of Statistics. Assist the office in performing a hypothesis test at the 5% level of significance to infer whether more than 55% of Western Australian residents support for the state border to remain closed. Display the six-steps process (involving drawing the rejection region/s and determining the critical value/s for the decision rule) in performing the test.
b) Specify the decision rule to use in the p-value method hypothesis testing. Calculate the p-value of the test above. Display working.
c) Which one of these two types of error (i.e Type I or Type II) you could make with the conclusion you made in part a)? Briefly explain the reasoning for your selection.
What is the required condition for ensuring that the sampling distribution of the sample proportion is approximately normally distributed? Check if the condition is satisfied in the hypothesis testing that you just completed.
case problem property purchase strategyglenn foreman president of oceanview development corporation is considering
an insurance company believes that their policyholders fall into two demographic profiles a and b. the fraction of
Use the cumulative relative frequencies given in the previous exercise to compute the relative frequencies for each class interval
the distribution of the annual incomes of a group of middle management employees approximated a normal distribution
Of the various theorems presented in this section, which ones do you think are the most important? Which ones do you think are the least important?
Define notation for the sample space of the problem, and use this to compute the probabilities from (a) and show that they are the same.
The weight of a product is normally distributed with a mean of four ounces and a variance of .25 "squared ounces." What is the probability that the randomly selected unit from a recently manufactured batch weighs no more than 3.50 ounces.
The heights of male college students in a large city are normally distributed with a mean of 68 inches and a standard deviation of 5 inches. If a male college student in this city is randomly selected, find the probability that the student's heigh..
Define the differences between primary, secondary and tertiary sources in a secondary search?
Forty-four percent of consumers with credit cards carry balances from month to month. five consumers with credit cards are randomly selected. What is the probability that all consumers carry a credit card balance?
Can anyone help with this type of question? The mayor of a town has proposed a plan for the annexation of a new community.
Find the LCD for the following rational expressions, and convert each rational expression into an equivalent rational expression with the LCD as the denominator.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd