Question

In: Statistics and Probability

For a weekly town council meeting in a certain town, the distribution of the duration of...

For a weekly town council meeting in a certain town, the distribution of the duration of the meeting is approximately normal with mean 53 minutes and standard deviation 2.5 minutes. For a weekly arts council meeting in the same town, the distribution of the duration of the meeting is approximately normal with mean 56 minutes and standard deviation 5.1 minutes. Let x¯1 represent the average duration, in minutes, of 10 randomly selected town council meetings, and let x¯2 represent the average duration, in minutes, of 10 randomly selected arts council meetings. Which of the following is the best reason why the sampling distribution of x¯1−x¯2 can be modeled by a normal distribution? The sample sizes are equal.

A Both sample sizes are large enough to satisfy the normality condition.

B The population distributions are approximately normal.

C The population standard deviations are assumed equal.

D The sample sizes are less than 10% of the corresponding population sizes.

Recipes for the same type of cookies can vary in terms of ingredients and baking times. From a collection of chocolate chip cookie recipes, a baker randomly selected 5 recipes. From a collection of oatmeal raisin cookie recipes, the baker randomly selected 4 recipes. The mean baking times, in minutes, for each sample were recorded as x¯C and x¯O, respectively. What is the correct unit of measure for the standard deviation of the sampling distribution of x¯C−x¯O?

A Minutes

B Minutes squared

C Recipes

D Number of Raisins

E Number of Chocolate Chips

Solutions

Expert Solution


Related Solutions

The Town of Brown has the following financial transactions: 1. The town council adopts an annual...
The Town of Brown has the following financial transactions: 1. The town council adopts an annual budget for the general fund estimating general revenues of $2.0 million, approved expenditures of $1.6 million, approved transfers pf $150,000. 2. The town levies property taxes of $1.5 million. It expects to collect all but 4% of these taxes during the year. Of the levied amount, $50,000 will be collected next year but after more than 60 days. 3. The town orders three new...
A town council wants to estimate the proportion of residents who are in favor of a...
A town council wants to estimate the proportion of residents who are in favor of a proposal to upgrade the computers in the town library. A random sample of 100 residents was selected, and 97 of those selected indicated that they were in favor of the proposal. Is it appropriate to assume that the sampling distribution of the sample proportion is approximately normal?
(Recording the budget and a budget revision)             The council of the Town of Tulia approved...
(Recording the budget and a budget revision)             The council of the Town of Tulia approved the 2013 budget as follows:             Budgeted 2013 revenues from:                Property taxes                                             $5,000,000                Sales taxes                                                  $1,000,000             Appropriations for 2013:                Salaries                                                       $4,600,000                Materials                                                     $1,200,000                Equipment                                                      $100,000 During 2013, the town’s mayor presented the council with a budget revision to increase the amount of appropriation for salaries by $10,000. The council approved this budget revision....
e) How to annualize a bi-weekly return? f) Bond Duration and types of Duration g) Features...
e) How to annualize a bi-weekly return? f) Bond Duration and types of Duration g) Features of Macaulay’s Duration Measure h) Term Structure of Interest Rate and Term Structure Theory i) Convexity of a Bond j) Convexity of a Callable Bond[hint: see RB textbook] k) Immunization Strategy l) Zero-coupon bond vs. Perpetuity and their duration measures
You are a meeting planner who was just contacted by an out of town client to...
You are a meeting planner who was just contacted by an out of town client to produce and “Indy 500” high roller party for 500 VIPs at the Sheraton Desert Inn. You are purchasing a band for $3,000. You are estimating your racing flag centerpiece cost (material and labor) to be $20 per table (50 tables). You are renting black and white checked scupltchair covers ($4.95) from a local linen company that will install the covers. You are estimating your...
The Town Council recently enacted new laws that will essentially restrict the number of new businesses...
The Town Council recently enacted new laws that will essentially restrict the number of new businesses allowed to operate each year. The improved Business Bureau is against that decision. You have been asked by the improved Business Bureau President to attend the next Council meeting and oppose the laws, replacing them with looser laws that encourage growth of new businesses. How would you use calculus and the assignment you have just completed to support the improved Business Bureau’s request? What...
As a manager for finance, information and communication technology of Okahao town council, your chief executive...
As a manager for finance, information and communication technology of Okahao town council, your chief executive officer have tasked you to draft the town council's budget. he further indicated that the town council will use a zero based budgeting for the 2020/2021 financial year. present the budget using the zero based format
Membership selection. A town council has 13 ​members, 7 Democrats and 6 Republicans. ​(A) If the...
Membership selection. A town council has 13 ​members, 7 Democrats and 6 Republicans. ​(A) If the president and​ vice-president are selected at​ random, what is the probability that they are both​ Democrats? ​(B) If a​ 3-person committee is selected at​ random, what is the probability that Republicans make up the​ majority?   
During a weekly meeting the CEO of company made an statement that he heard from a...
During a weekly meeting the CEO of company made an statement that he heard from a friend that “There is general agreement that, before it can be regarded as useful in satisfying the needs of various user groups, accounting information should satisfy certain criteria.” You as a chief account of the company is required to explain the to the CEO the key characteristics of Accounting Information with clearly providing example(s) wherever queried for each characteristic.
The Town Council of Flic-en-Flac in Mauritius wonders if the town’s public beach should be kept...
The Town Council of Flic-en-Flac in Mauritius wonders if the town’s public beach should be kept cleaner. The Council estimates that the benefit of a cleaner beach would be a 6% increase in annual tourist spending from the current level of $2 million per year. The main cost is paying staff for picking up debris on the beach, most of which is plastic trash left by beach users. The Council estimates that 6 staff will be needed for 4 hours...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT