She knows that, on average, she has a daily revenue of $250. She randomly samples the revenue from eight Tuesdays and finds she takes in $260, $245, $270, $260, $295, $235, $270, and $265. Assume that daily revenue is normally distributed. a. Specify the population parameter to be tested. b. Specify the null and alternative hypotheses to test the hairdresser's claim. c. Calculate the sample mean revenue and the sample standard deviation.

She knows that, on average, she has a daily revenue of $250. She randomly samples the revenue from eight Tuesdays and finds she takes in $260, $245, $270, $260, $295, $235, $270, and $265. Assume that daily revenue is normally distributed. a. Specify the population parameter to be tested. b. Specify the null and alternative hypotheses to test the hairdresser's claim. c. Calculate the sample mean revenue and the sample standard deviation.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 4DGP

See similar textbooks

Related questions

Q: For items 11 to 14: A study was conducted to investigate the interactions between California…

Q: June has a coupon for a 30% discount. The price of a sweater after the coupon is applied is $65.8.…

Q: A sample has a mean of M = 50. If one new person is added to this sample, what effect will this have…

A: The sample mean is defined as M = Σx/n, where the value of observation is x and n is the total…

Q: A police department released the numbers of calls for the different days of the week during the…

A: For the given data Perform Chi square goodness of fit

Q: Group of answer choices H0 : population average = 4.7% H1 : population average > 4.7% H0 :…

Q: With chi-squared tests, we always have ________-tailed tests with at least ______ expected…

A: Solution-: With chi-squared tests, we always have _______-tailed tests with at least _______expected…

Q: During a barangay census, the following information was acquired. 15 children out of 23 are…

A: Given that During a barangay census, the following information was acquired. 15 children out of…

Q: For items 11 to 14: A study was conducted to investigate the interactions between California…

Q: Y₁ =B₁ + B₁X₁ + e, (2) In which , and B, are OLS estimates of b, and b₁, respectively. n Σx, Yi (1)…

A: We have given that

Q: The joint density function of X and Y is 1 fxy (x, y) ={100 0 <x< 5, 0<y<20 elsewhere Find the…

Q: The following data represent the length of life in minutes, measured to the nearest tenth, of a…

A: Given data indicates a random sample of 50 black mosquitoes subjected to a new spray in a laboratory…

Q: Scenario 4: Drug Effectiveness To test the effectiveness of a new drug, a researcher gives one group…

Q: To achieve statistical significance for a one-sample t-test, is which of the following? the…

A: The statistical significance is essentially described as the inference about the indifference…

Q: assume that you plan to use a significance level of. 05 to test the claim that P one equals P2 used…

A: From the given information we conduct the Hypothesis test for Proportion. We get one example for…

Q: The dams in and around Cape Town form part of the Western Cape Water Supply System, which is an…

A: Given that, the change in depth of the Steenbras dam from one day to the next, measured (in feet) at…

Q: 5 8 5 4 7.5 5 2.5 3.5 What are the correct hypotheses? Select the correct symbols in the order they…

Q: What is/are the critical value/s?

A: Assume that level of significance is α = 0.05. The sample size is, n = 20

Q: Let Us Achieve! Direction: Decide whether the null hypothesis is to be rejected or accepted, given…

A: According to the given information in this question We need to identify whether the null hypothesis…

Q: The mean percent increase in this sample is: a. 13.5%. b. 14.2%. c. 12.2%. d. 11.8%.…

A: It is given that, The sample of the percent increase in five growth funds over a one-year period.…

Q: Make your own example of mean of a sampling distribution. Also, construct the sampling distribution.

A: Concept of sampling distribution of sample mean: Let a particular characteristic of a population is…

Q: Decision Rule (Be sure to include your critical value) 5. Do your calculations 6. Make your…

A: Please find the explanation below. Thank you

Q: Ana has a team composed of ten juniors and twelve sophomores. What is the probability that a…

A: Given,no.of juniors =10no.of sophomores=12Total no.of team members=22

Q: The following tasks are required to produce widgets. Task Time Immediate (seconds) Predecessor A 30…

Q: Suppose you bought a stock 6 years ago at RM12 per unit. Table below shows the stock price at the…

A: Given that -

Q: Question 5 Suppose we have the PRF represented as the equation In Y₁ = b + b, ln X₁, + b₂ ln X₂, +…

Q: question 27 59% of students entering four-year colleges receive a degree within six years. Is…

Q: d) Estimate the interquartile range of cholesterol levels. IQR=_________mg/dL e) Above what…

A: Given that, μ=194σ=28 d) The value of first quartile is, The value of third quartile is, The…

Q: 3. We throw a dice 10 times consecutively, obtaining the results: 1, 1, 1, 3, 3, 4, 4, 5, 6, 6.…

A: Solution-: We throw a dice 10 times. We obtain the following results: 1,1,1,3,3,4,4,5,6,6 We…

Q: A sample is given from the values of the EV/Net Income index (an indicator that compares the value…

A: Histogram is used to measure the shape of the data set. It explains whether the data is symmetrical…

Q: Which of the following r-values indicates the strongest relationship between two variables? - 0.89

A: We know that Correlation coefficient is said to be in strong relationship when it is near to 1 or…

Q: The data found below measure the amounts of greenhouse gas emissions from three types of vehicles.…

A: The question is based on a one way - ANOVA Given :

Q: "A manufacturer of shampoo claims that 27% of the shampoo users prefer brand X. To test this claim,…

A: Claim : 27% of the shampoo users prefer brand X.

Q: Directions: Perform what is being asked. Write your answers on the spaces provided. 1. A researcher…

A: A random sample of 35 colleges deans has a mean salary 65700;n=35 x=65700Population standard…

Q: 4. After seven netball matches, Kai has averaged 11 goals per game. a. Find the value of a. 7 a 9 13…

Q: I generated samples of (y,x) and fit simple linear regression models: (i) y on x, are the (partial)…

A: As we see that, p-value is same for coefficient y and x. So t-value will also be the same for both…

Q: List down five (5) different real-life situations where hypothesis testing can be done. Identify the…

A: 1. Income: Compariosion os male and female earnings The income of male is higher than female

Q: The mode is the only measure of central tendency that is appropriate to utilize for a variable…

A: Mode: Mode is the value, which has the highest frequency among all other values of the observation.

Q: FIND A 90% CONFIDENCE INTERVAL FOR THE DIFFERENCE IN POPULUTION PROPORTIONS Pf -Pm round your…

A: Given: n1=100, n2=50, p1^=0.24, p2^=0.43 We find the 90% C.I. for the difference in population…

Q: Find the area of the shaded region. The graph depicts the standard normal distribution of bone…

Q: Given P(A) = 0.372, find the probability of the complementary event.

Q: Mileages for tires before they are replaced are normally distributed with mean 45,000 miles and…

A: Mileages for tires before they are replaced are normally distributed.

Q: How many degrees of freedom are there when we conduct a chi-square analysis of this crosstab? 2.…

A: Given:

Q: 8. The following data shows the time (in minutes) to wait in line at a bookstore for 20 students. 3…

Q: Two clerks are available to serve m client. Initially, each clerk will serve one client. Whenever a…

A: An exponential distribution is a continuous distribution that models the probability of the…

Q: wwwwwwwwwwww 4. We have the temperatures in several cities of Spain: Aviles (11°C), Barcelona…

A: Formula : sample variance :

Q: An experiment consists of randomly choosing a number between 1 and 10. Let E be the event that the…

Q: (d) Calculate the sample correlation and the sample covariance by hand for the first 8 observations…

A: (d)Given that, n = number of paired observations = 8 Let 'X' be a random variable represents the…

Q: For numbers 1 to 3: The thermal condition in a cave is critical for sustaining a bat population. A…

A: Given : P-value = 0.1519...( from given output)

Q: Question In the PRF represented in the equation (1), assume the error term u¡ ~ i.i.d N(0,♂²), prove…

Q: on the two common operating systems in the smartphone market. She wants to decide in which system to…

Question

Please answer this question with diagram A hairdresser believes that she is more profitable on Tuesdays, her lucky day of the week. She knows that, on average, she has a daily revenue of $250. She randomly samples the revenue from eight Tuesdays and finds she takes in $260, $245, $270, $260, $295, $235, $270, and $265. Assume that daily revenue is normally distributed. a. Specify the population parameter to be tested. b. Specify the null and alternative hypotheses to test the hairdresser's claim. c. Calculate the sample mean revenue and the sample standard deviation. d. Compute the value of the appropriate test statistic. e. At the 10% significance level, specify the critical value(s). f. At the 10% significance level, is the hairdresser's claim supported by the data?

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Expert Solution