What test statistics will be used for this problem?
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Q: What is Descriptive Statistics?
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A: Descriptive statistics: Which provides the summary of data under study and it's explained already…
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Q: Define Inferential Statistics?
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Q: What is Inferential Statistics?
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Q: differentiate the following statistical terminologies with some examples. Descriptive Statistics and…
A: Let DS denote Descriptive Statistics. Let IS denote Inferential Statistics.
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- a marketing company is studying consumer preferences for four brands of softdrinks (A,B,C,D) and uses a random smaple of 400 customers. Using the observed requency data below, test the hypothesis of equal preferences for the four brands at the 0.05 level. Make sure to show your work. Brand Observed Frequency A 105 B 100 C 103 D 92For the survey method to be valid, a representative sample of peoplemust be polled. T or F?a national caterer determined that 37% of the people who sampled their food said that it was delicious. A random sample of 144 people are asked to sample the caterers food. If p is the sample proportion saying that the food is delicious, what is the standard error for the sampling distribution of p?
- To know the preference of Marikeños regarding vaccine brand for booster shot, the city health officer asked every 3rd individual entering the vaccination site. a. Simple Random Sampling b. Systematic Sampling c. Stratified Sampling d. Cluster Samplingthe Wall Street Journal reported that the age at first startup for 55% of entrepreneurs was29 years of age or less and the age at first startup for 45% of entrepreneurs was 30 yearsof age or more (the Wall Street Journal, March 19, 2012).a. Suppose a sample of 200 entrepreneurs will be taken to learn about the most importantqualities of entrepreneurs. Show the sampling distribution of p where p is the sampleproportion of entrepreneurs whose first startup was at 29 years of age or less.b. What is the probability that the sample proportion in part (a) will be within ±.05 ofits population proportion?the Wall Street Journal reported that the age at first startup for 55% of entrepreneurs was29 years of age or less and the age at first startup for 45% of entrepreneurs was 30 yearsof age or more (the Wall Street Journal, March 19, 2012).a. Suppose a sample of 200 entrepreneurs will be taken to learn about the most importantqualities of entrepreneurs. Show the sampling distribution of p where p is the sampleproportion of entrepreneurs whose first startup was at 29 years of age or less.b. What is the probability that the sample proportion in part (a) will be within ±.05 ofits population proportion?c. Suppose a sample of 200 entrepreneurs will be taken to learn about the most importantqualities of entrepreneurs. Show the sampling distribution of p where p is now thesample proportion of entrepreneurs whose first startup was at 30 years of age or more.
- A random sample of 40 students from each grade level was surveyed regarding their preference for a class field trip. If there are 180 members of the 8th grade class, then what percent preferred either the museum or the sports complex? Show your work.A university employment office wants to compare the time taken by graduates with three different majors to find their first full-time job after graduation. The following table lists the time (in days) taken to find their first full-time job after graduation for a random sample of eight business majors, seven computer science majors, and six engineering majors who graduated in May 2019. find the values A to HUse the figure to the right, which shows the percentages of adults from several countries who favor building new nuclear power plants in their country. The survey included random samples of 1115adults from Country A, 1021 adults from Country B,1038 adults from Country C, and 1067 adults from Country D. At α=0.04, can you reject the claim that the proportion of adults in Country C who favor building new nuclear power plants in their country is greater than the proportion of adults from Country D who favor building new nuclear power plants in their country? Assume the random samples are independent. Country A: 54%. Country B: 51%. Country C: 48%. Country D:37%. Part A: Choose the correct answer. A. H0:p1>p2 Ha:p1≤p2 B. H0:p1≤p2 Ha:p1>p2 C. H0:p1<p2 Ha:p1≥p2 D. H0:p1=p2 Ha:p1≠p2 E. H0:p1≠p2 Ha:p1=p2 F. H0:p1≥p2 Ha:p1<p2 Find the standardized test statistic. Use technology to calculate the P-value. Decide whether to reject or fail to reject the…
