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Sheryl Ezze verified

Numerade educator

After getting trounced by your little brother in a children’s game, you suspect that the dice he gave you is unfair. To check, you roll it 60 times, recording the number of times each face appears (below). Do these results cast doubt on the fairness of the dice? Assume α=0.05. (SPSS) face: 1 2 3 4 5 6 count:11 7 9 15 12 6

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Is a manufacturer’s geographic location independent of the type of customer? Use the following data (Q4 Excel) for companies with primarily industrial customers and companies with primarily retail customers to test this question. Let α=0.10. (SPSS) Geographic Location Northeast West South Industrial Customer 230 115 68 Retail Customer 185 143 89

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Lucas Finney verified

Numerade educator

The Central Medical Service keeps records of emergency telephone calls. A study of 150 five- minute time intervals resulted in the distribution of the number of calls as follows (Q3 in Excel). For example, during 18 of the five-minute intervals, no calls occurred. Use α=0.05 to test these data to determine whether they are Poisson distributed.(SPSS) Number of Calls (per 5-minute interval) Freq 0 18 1 28 2 47 3 21 4 16 5 11 6 or more 9

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Joshua Argo verified

Numerade educator

CDS2001 Assignment 3 [100 marks] Instruction: You should conduct all the computations in SPSS. You must state the Null and Alternative hypotheses clearly, include the appropriate SPSS output and interpret your answers in the context of the questions. You should submit your answer in MS Word. Handwriting is not accepted. Submission: Upload your work in Moodle by 5 pm 27 Oct 2022. Except for Q1, all data can be found in the Excel file in Moodle. Q1 [20 marks] A national food product company believes that it sells more frozen pizza during the winter months than during the summer months. Average weekly sales for a sample of stores in the XYZ area over a three-year period provided the following data for sales volume (in $) during the two seasons. Season | n | Mean | SD | Min | Max Winter | 38 | 31234 | 13500 | 15312 | 73841 Summer | 40 | 22475 | 8442 | 12743 | 54706 Using ?=0.05, is there evidence to confirm this food product company's belief?

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According to a union agreement, the mean income for all senior-level assembly-line workers in a large company is $500 per week. A representative of a women’s group decides to analyse whether the mean income for female employees matches this norm. For a random sample of 50 female employees, the mean is $410 and the SD is $90. Test with α=0.05, whether the mean income of female employees differs from $500 per week. What is the probability of the Type II error in this case?

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What is the time complexity and space complexity of the following code using big-O notation? def exercise_2(n): a, b = 1, 0 if a < n: while a < n: a += 2 b += 1 else: while a < 10: a += 1 b += 1 return b

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David Nguyen verified

Numerade educator

The 49 students in a class at ABC university made a blinded evaluation of pairs of cola drinks. For the 49 comparisons of Coke and Pepsi, Coke was preferred 29 times. In the population that this sample represents, is this strong evidence that a majority prefers one of the drinks (use 0.05 significance level) What is the probability of the Type I error in this case?

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David Nguyen verified

Numerade educator

Same-sex marriage was legalized across Canada by the Civil Marriage Act enacted in 2005. Is this supported by a majority or a minority of the Canadian population? A poll conducted for the ABC newspaper in July 2005 of 1000 Canadians asked whether this bill should stand or be repealed. The responses were 55% stand, 39% should repeal, 6% don’t know. Based on the result of the poll, is there evidence that there was a majority of support for the Civil Marriage Act. Assuming α=0.01. What is the probability of the Type I error in this case?

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David Nguyen verified

Numerade educator

Listed below are the selling prices of a specific brand of chocolate bar purchased in various shops. You found out that the recommended retail price is $12. Based on this sample and the use of a 0.05 significance level, is there evidence to conclude the selling price is higher than the recommended retail price? (Assuming the selling prices are normally distributed) What is the probability of the Type II error in this case? 11.7 12 14.5 12.3 13.1 13.7 13.3 13.5 14.4 12.8 13.5 12.1

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David Nguyen verified

Numerade educator

According to a union agreement, the mean income for all senior-level assembly-line workers in a large company is $500 per week. A representative of a women’s group decides to analyse whether the mean income for female employees matches this norm. For a random sample of 50 female employees, the mean is $410 and the SD is $90. Test with α=0.05, whether the mean income of female employees differs from $500 per week. What is the probability of the Type II error in this case?

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