Maxwell’s hot chocolate is concerned about the effect of the year-long coffee advertising campaign on the chocolate sales. The weekly hot chocolate sales from 15 locations (in this year) is collected and summarized in the following table. Descriptive Statistics N Sum Range Minimum Maximum Mean Std. Deviation Variance Sales 15 --- --- 20 197 24.80 3.53 12.46 a) Calculate the missing values in the table (Sum and Range) b)  The average sales was $26.6 last year and the manager of the firm claim that there is a decrease in the sales this year. Does the data provide sufficient evidence to support the claim of the manager at 1% significance level? Show your calculations in detail and interpret the result.

Q: 12. The red blood cell count for a population of adult males can be approximated by a normal…

A: We have given that  X~N( μ , ?^2 )    μ = 5.4    , ? = 0.4   Z-score =( x - μ )/?  ,

Q: A newspaper sometimes makes printing error in its advertising and is forced to corrected advertising…

A: Compute the mean of the error made in advertising. From the information, given that the probability…

Q: II. Find the sample mean, sample variance and sample standard deviation of the given data sets. 1.4…

A: As per our guidelines we are suppose to answer only one question. Given data is4, 7, 10, 13, 17, 21,…

Q: To study the effect of temperature on yield in a chemical process, five batches were produced at…

A:

Q: Cholesterol level ~ Cholesterol level tends to increase with age in both women and men. A medical…

A: The mean for women nis 196.9 and the mean for men is 205.4.

Q: The following data provided are the average hours fifty-six grade 8 students spent doing their…

A: Given: The lowest amount of hours recorded is 5 hours (every 5 school days), and the highest is 34…

Q: -Study and analyze ne number of shoes sold per day at a retail store is shown in the table below.…

A: Given that  X 19 20 21 22 23 P(X) 0.4 0.2 0.2 0.1 0.1 Mean = E(X)=∑X.P(X) Var(X)=E(X2) -…

Q: To study the effect of temperature on yield in a chemical process, five batches were produced at…

A: Obtain the values in the ANOVA table.   Use EXCEL Procedure to obtain the values in the ANOVA table.…

Q: To study the effect of temperature on yield in a chemical process, five batches were produced at…

A: Excel: Data --> Data analysis -->Anova: Single Factor

Q: Calculate the sample mean and standard deviation for X (the exchange rate) and Y (sales). Calculate…

A:

Q: 1. The data show the total number of medals (gold, silver, and bronze) won by each country winning…

A: Step-by-step procedure to obtain the mean, median, and mode using Excel. In Excel sheet, enter…

Q: Consider that X1, X2, X3, X4, X5 is an independent random sample where Xi follows a normal…

A:

Q: 1. The number of hours worked each week by a teacher over the past two months are: 49 53 38 49 16 43…

A: Since your question has multiple parts, we will solve first question for you. If you want remaining…

Q: 1. The table below shows the weights (kg) of the students in an ESM 2035 class. a. Calculate the…

A: Given data: Weights Frequency 40 - 49 3 50 - 59 7 60 - 69 14 70 - 79 12 80 - 89 8 90…

Q: 2. Dr. Cornie developed a test to measure Boredom. He administered it to a group of 20,000 adults.…

A: The mean and the variance needs values xPX and x2PX calculated by the table below: Score X…

Q: Monthly electric bills of householders in Muscat are normally distributed with a mean of OMR 25 and…

A:

Q: 3. The costs per load (in cents) of 35 laundry detergents tested by a consumer organization are…

A: Formula : mean :   sample variance :

Q: To study the effect of temperature on yield in a chemical process, five batches were produced at…

A: Solution-: Let, x1=500C, x2=600C, x3=700C We prepare the ANOVA table Find,  Test statistic=?…

Q: 1. A magazine claims that the mean amount spent by a customer at Burger Stop is greater than the…

A:

Q: o study the effect of temperature on yield in a chemical process, five batches were produced at each…

A: Construct an analysis of variance table (to 2 decimals but p-value to 4 decimals, if necessary).…

Q: before coaching (yards) Tee shot distance after coaching (yards) 218 213 231 224 239 253 246 242 Leo…

A: Given : For Tee shot distance ( before coaching yards)  given data :…

Q: 5. A commuter from Cavite travels daily to work in Manila each morning. He records his travel time (…

A: Instruction : "using excel"   The formulas for all the values :

Q: Use technology to perform two-sample t-test to determine whether there is a difference in the mint…

A: Two sample t -test    To determine whether there is difference in the mint dates and the values of…

Q: A: Find the standard deviation and variance of the following data classes 10- 13- 16- 19-22 freq B:…

A:

Q: 3. Based on journal articles on speed limits, variability in speed poses the greatest risk of…

A: The given output of R command is, Chi-squared value=117.22 d.f=199 P-value=0.0000007284

Q: Calculate the variance and standard deviation for the students score data. Score 10-14 15-19 20-24…

A: Obtain the value of the standard deviation for the students score data. The value of the standard…

Q: According to Chebyshev's theorem, what is the maximum proportion of data values from a data set that…

A: We know that the, By Chebychev's inequality P(|X-μ| ≥ kσ) ≤ 1/k2 So, if k=2.5, then P(|X-μ| ≥ 2.5σ)…

Q: a. Calculate the variance of the scores for each woman. b. Are the scores for the younger woman more…

A: We know : Difference in performance from trial to trial for same person is known as consistency. We…

Q: Four salesman were posted in difference areas by a company. The number of units of commodity x sold…

A: Given: Test-statistic F = 3.89 Rejection region: If Test-statistic > Critical value, Reject H0.

Q: 1. The data show the total number of medals (gold, silver, and bronze) won by each country winning…

A: The number of observations, n=18. The range is calculated below. The mean is calculated below.

Q: 1. The table below shows the weights (kg) of the students in an ESM 2035 class. a. Calculate the…

A:

Q: To study the effect of temperature on yield in a chemical process, five batches were produced at…

A: a).Step-by-step procedure to obtain the ANOVA one-way table using Excel Mega stat is as follows:In…

Q: 2. As part of studying the relationship between reported SAT score and recorded SAT score, the…

A: Question 2 Arranging the data in ascending order: 5,6,7,7,9,9,10,11,11,13,14,15,16,17,24 sample size…

Q: Collected data: GPA of working students (working 20 hours and more per week): 2.02  2.12  2.17…

A: To Calculate mean, first we add all the observations and divide the sum with the sample size. So…

Q: 5. (No computer output is accepted) Maxwell's hot chocolate is concerned about the effect of the…

A: Please find step by step solution below. The problem can be solved using t-test statistics.

Q: computer software package was used to calculate some numerical summaries of a sample of data results…

A: From the provided information, Standard error (SE) of mean = 2.05 Standard deviation = 10.25 Sum =…

Q: The time taken to complete a puzzle by 40 first graders was recorded below Time (mins) Frequency 5-9…

A: Given information: The time taken to complete a puzzle by n = 40 first graders was recorded below:…

Q: Print-O-Matic printing company spends specific amounts on fixed costs every month.  The costs of…

A:

Q: Example 2. Calculate the quartile deviation and co-efficient of quartile deviation from the…

A:

Q: To study the effect of temperature on yield in a chemical process, five batches were produced at…

A: ANOVA are of two types, one way ANOVA and two way ANOVA. ANOVA is used to compare the means of more…

Q: To study the effect of temperature on yield in a chemical process, five batches were produced at…

A: The study is about the effect of temperature on yield in a chemical process.

Q: The mean work week for engineers in a start-up company is believed to be about 60 hours. A newly…

A: Data (length of mean work week): 70; 45; 55; 60; 65; 55; 55; 60; 50; 55.

Q: XYZ office supplies company leases copier machines to businesses. Leases are normally distributed…

A: Given,mean(μ)=24standard deviation(σ)=6

Q: To study the effect of temperature on yield in a chemical process, five batches were produced at…

A: Analysis of variance table: Excel Procedure: Enter the data for 50C, 60C and 70C in Excel…

Q: A newspaper sometimes makes printing error in its advertising and is forced to corrected advertising…

A: Given information: The number of errors with associated probabilities is

Q: EDEMET attends to the electrical energy, in a wooded area of ​​Chiriquí and therefore prone to…

A: Given data: 2.5 2.0 1.5 3.0 1.0 1.5 2.0 1.5 1.0 1.0 4.0 4.5 3.0…

Q: An agricultural researcher is interested in estimating the mean length of the growing season in a…

A: From the provided information, The data is as follow: 157 159 142 145 166 191 195 178 170 153 Since,…

Q: B. The following data show the age of 180 random consumer of facial wash in a supermarket. Calculate…

A: Given data is Age No. of consumer(f) 9-15 12 16-22 52 23-29 68 30-36 28 37-43 13…

Q: #9 please fine the mean variance,  standard deviation

A: