3. Pepsi wants to conduct a study to determine whether their process is under control or not. Forthat reason, a sample of six bottles are collected and measured by the quality manger fivetimes a day.123512.1112.1512.0912.1312.0612.0912.112.1212.0912.1212.1112.13312.1112.112.1512.0812.112.07412.0812.1112.1112.1212.112.112.112.1212.112.112.1112.14a. What is the sample size and what is the number of samples?b. Given the table above, draw a conclusion about the process.

Measures of 6 bottles at 5 times a day are given, the values are arranged in the following…

Answered: 3. Pepsi wants to conduct a study to…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Here are the lengths in cm of young cat before their release. 20.5 21 24 23.5 20.2 25 19.6 24 18 28 19 24 25.1 23.7 26 16.2 25 22.3 23.6 22 a. The average length of cat ready to release into the wild is 23 cm. You are worried that this sample of cat is, on average, too small to release into the wild. At the 5% significance level, do we have good evidence that these cats are too small? State the hypotheses, find the test statistic and p-value and state the decision. b. State the decision in the context of the problem. c. Suppose some of the lengths of the cats were recorded incorrectly, and the true average of the hellbenders was 22 cm. Did you just find a Type I error, a Type II error or make the correct decision? Explain, using definitions
1. Locate the following percentiles under the normal curve. 1. PB4 2. P25 3. P78 4.P65 5. P44 II. Solve the following problems involving permutation. 1. How many arrangements can be made using the letters of the word REMEMBER? 2. Julia wanted to plant trees in a row in front of her farmhouse. She has 3 pine trees, 4 mahogany trees, 2 acacia trees, and I narra tree. How many different arrangements are possible for planting the trees in a row?
The increasing annual cost (including tuition, room, board, books, and fees) to attend college has been widely discussed.† The following random samples show the annual cost of attending private and public colleges. Data are in thousands of dollars. Private Colleges Public Colleges 53.8 43.2 46.0 32.3 44.0 20.3 22.0 28.2 15.6 24.1 28.5 30.6 44.8 36.8 50.5 43.0 22.8 25.8 18.5 25.6 14.4 21.8 (a) Compute the sample mean (in thousand dollars) and sample standard deviation (in thousand dollars) for private colleges. (Round the standard deviation to two decimal places.) sample mean $ thousand sample standard deviation 2$ thousand Compute the sample mean (in thousand dollars) and sample standard deviation (in thousand dollars) for public colleges. (Round the standard deviation to two decimal places.) sample mean %24 thousand sample standard deviation %$4 thousand
Many carmakers recommend that tires are replaced after six years of age. But a survey showed that many car owners ignore that advice and wait longer to replace the tires on their vehicles. The following data show the age, in years, for 10 vehicles whose tires were recently brought in to the dealer for a tire replacement. 11.2 9.7 10.1 10.0 10.9 7.7 9.9.10.3 10.1 10.6 Based on this sample, compute the descriptive statistics (in years) in parts (a) and (b) and then answer the questions in parts (c) and (d). (a) mean, median, and mode (in years) mean years median years years mode (b) range and standard deviation (in years) (Round your answers to four decimal places.) range years years standard deviation Z = (c) Compute the z-score for a set of tires with an age of 7.7 years. (Round your answer to four decimal places.) Should the age of 7.7 years be considered an outlier in comparison to the other tire ages? The age of 7.7 years is ---Select--- than three standard deviations away from the…
50. Which of the following involves dependent samples: a. Testing the difference in life expectancy between left- and right-handed people b. Evaluating the growth of grizzly bears by weighing each bear at both 1 and 2 years of age C. Assessing the difference in age of automobiles driven by faculty and students d. Determining the effectiveness of a drug by examining the difference in successful responses between a treatment (got the drug) group and a control (got a placebo) group of patients
5. Consider the partially completed ANOVA summary table below. Source df SS MS Regression 1 700 Residual Total 8 1100 a. Complete the remaining entries in the table. b. Calculate the sample coefficient of determination. C. Using a=0.05, is there a significant relationship between two variables?
Suppose you are asked to toss a coin 16 times and calculate the proportion of the tosses that were heads. a. What shape would you expect this histogram to be and why? b. Where you do expect the histogram to be centered? c. How much variability would you expect among these proportions? d. Explain why a Normal model should not be used here.
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day.of.year time.of.day sampling.time soil.temperature soil.water.content 174 8am 174.25 24 0.358 174 2pm 174 8pm 174.5 29.85 0.352 174.75 31.4 0.346 175 2am 175 27.44 0.338 175 8am 175.25 25.05 0.331 175 2pm 175.5 29.98 0.329 175 8pm 175.75 31.29 0.325 176 2am 176 27.8 0.318 176 8am 176.25 25.2 0.313 176 2pm 176.5 29.84 0.311 176 8pm 176.75 31.27 0.309 177 2am 177 27.46 0.303 177 8am 177.25 24.87 0.298 177 2pm 177.5 29.56 0.298 177 8pm 177.75 30.17 0.296 178 2am 178 26.5 0.291 178 8am 178.25 24.89 0.288 178 2pm 178.5 28.38 0.288 178 8pm 178.75 32.68 0.288 179 2am 179 27.53 0.283 179 8am 179.25 25.2 0.28 179 2pm 179.5 30.44 0.279 179 8pm 179.75 34.34 0.278 180 2am 180 28.92 0.275 180 8am 180.25 26.5 0.272 180 2pm 180.5 31.41 0.27 180 8pm 180.75 34.61 0.267 181 2am 181 29.61 0.265 181 8am 181.25 27.09 0.262 181 2pm 181.5 31.79 0.26 181 8pm 181.75 35 0.256 182 2am 182 30.23 0.254
A professor at the University of New Hampshire was interested in evaluating the effect of the unemployment rate on the incarceration rate. Using data from 50 states and the District of Columbia (n = 51), the researcher computed the Pearson’s correlation coefficient between the two variables. The results are presented below. Correlations Incarceration Unemployment Incarceration Pearson Correlation 1 .209 Sig. (2-tailed) .142 N 51 51 Unemployment Pearson Correlation .209 1 Sig. (2-tailed) .142 N 51 51 Using an alpha level of 0.05 and the four steps of the hypothesis testing process, test the research hypotheses that unemployment increases incarceration. Step 3 Step 4 Based on your decision to step 4 what type of error might you be making?
Listed below are the lead concentrations in μg/g measured in different traditional medicines. Use a 0.05 significance level to test the claim that the mean lead concentration for all such medicines is less than 18 μg/g. Assume that the sample is a simple random sample. 13 15.5 3.5 8.5 17 18.5 8.5 19 9.5 20
Identify which statistical test is to be used in the following problems. 1. Is the given sample mean of 74 production units per day equal to the population mean? 2. Would thirty high school graduating students change in their self-concept after knowing they had passed an important test? 3. Is employee’s rank correlated with efficiency rating? 4. Did the method of teaching interact with students’ learning styles? What is the interaction effect of the method of teachings and medium of instruction on the achievement of students in Probability and Statistics? 5. Is IQ level associated with gender? 6. Is there a significant difference between the two sections of Senior High School in terms of academic achievement in Calculus?

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