A magazine collected the ratings for food, decor, service and the cost per person for a sample of 96 restaurants. They combined the ratings to create a summated rating and used that to predict the cost of a restaurant meal. The data are modeledby Y; = - 30.871 + 0.9349X;, where X; is the summated ratings and Y; is meal cost. For these data, Syx = 8.575, X= 61.02, and h; = 0.027122 when X = 52. Complete parts (a) through (c).%3D%3Da. Construct a 90% confidence interval estimate of the mean cost of a meal for restaurants that have a summated rating of 52.|SHYIX =x, 5(Type integers or decimals. Round to three decimal places as needed. Use ascending order.)

Obtain the predicted value of Y when X equals 52. The predicted the value of Y when X equals 52 is…

Answered: A magazine collected the ratings for…

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter7: Percents

Section: Chapter Questions

Problem 10PTTS

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The level of fame of an artist is assigned from 1 to 10, with 10 signifying the most famous artist. Data are collected about selling prices for painting and the level of fame of the artists. The model ŷ = 958.25(2.988)x is calculated, where x represents the artist's fame score and ŷ represents the predicted selling price of the painting. Use the model to predict the selling price of a painting whose artist's fame is a level 5. $143,163 $192,441 $228,235 $958,250
A high school guidance counselor analyzed data from a sample of 200 community colleges throughout the United States. One of his goals was to estimate the annual tuition costs of community colleges in the United States. Describe the population and variable of interest to the guidance counselor. Why?
Suppose you have information about average heights of a random sample of airline passengers. The mode is 64 inches, the median is 73 inches, and the mean is 75 inches. To convert the data into centimeters, multiply each data value by 2.54. What are the values of the mode, median, and mean in centimeters? (Enter your answers to two decimal places.)
What would be a suitable chart type to show the proportions of the sales by products?
As an economics class project, Debbie studied a random sample of 14 stocks. For each of these stocks, she found the cost per share (in dollars) and ranked each of the stocks according to cost. After 3 months, she found the earnings per share for each stock (in dollars). Again, Debbie ranked each of the stocks according to earnings. The way Debbie ranked, higher ranks mean higher cost and higher earnings. The results follow, where x is the rank in cost and y is the rank in earnings. Stock 1 2 3 4 5 6 7 8 9 10 11 12 13 14 x rank 4 12 5 7 8 11 9 13 10 6 2 3 14 1 y rank 9 7 11 14 6 10 12 5 4 3 2 1 13 8 Using a 0.01 level of significance, test the claim that there is a monotone relation, either way, between the ranks of cost and earnings. (a) What is the level of significance? (b) Compute the sample test statistic. (Use 3 decimal places.)
Suppose you have information about average heights of a random sample of airline passengers. The mode is 68 inches, the median is 69 inches, and the mean is 65 inches. To convert the data into centimeters, multiply each data value by 2.54. What are the values of the mode, median, and mean in centimeters? (Enter your answers to two decimal places.) mode = cm median = cm mean = cm
QDES.A A study was undertaken to see how accurate food labeling for calories on food that is considered "reduced calorie". The group measured the amount of calories for each item of food and then found the percent difference between measured and labeled food. The group also looked at food that was nationally advertised, regionally distributed, or locally prepared. The data is in the following table ("Calories datafile," 2013). Table: Percent Differences Between Measured and Labeled Food National Advertised Regionally Distributed Locally Prepared 2 41 15 -28 46 60 -6 2 250 8 25 145 6 39 6 -1 16.5 80 10 17 95 13 28 3 15 -3 -4 14 -4 34 -18 42 10 5 3 -7 3 -0.5 -10 6 Do the data indicate that at least two of the mean percent differences between the three groups are different?…
The number of students in a classroom would be considered which type of data.
the highest data of 50 leaves is 150mm and the lowest is 118m the desired class size is 9
qdes.c A study was undertaken to see how accurate food labeling for calories on food that is considered "reduced calorie". The group measured the amount of calories for each item of food and then found the percent difference between measured and labeled food. The group also looked at food that was nationally advertised, regionally distributed, or locally prepared. The data is in the following table ("Calories datafile," 2013). Table: Percent Differences Between Measured and Labeled Food National Advertised Regionally Distributed Locally Prepared 2 41 15 -28 46 60 -6 2 250 8 25 145 6 39 6 -1 16.5 80 10 17 95 13 28 3 15 -3 -4 14 -4 34 -18 42 10 5 3 -7 3 -0.5 -10 6 Do the data indicate that at least two of the mean percent differences between the three groups are different?…
Howard scored in the 55th percentile rank on an exam. If 400 students took the exam, how many students scored lower than Howard?
Southwest Airlines had 81.1 million domestic boardings in a recent year, followed by Delta Airlines with 79.4 million, American Airlines with 72.6 million, United Airlines with 56.3 million, Northwest Airlines with 43.3 million, US Airways with 37.8 million, and Continental Airlines with 31.5 million, according to T-100 Domestic Market. Construct a pie chart to depict this information. List down the variable of the above data. Describe whether each variable are qualitative or quantitative data? Explain your answer. Describe the level of measurement for the variables. Explain your answer.

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