Use the following table to determine whether or not there is a significant difference between the average hourly wages at two manufacturing companies. Assume a level of significance of 0.05.   Manufacturer 1 Manufacturer 2 n1 = 82 n2 = 65 x⎯⎯1=$16.80x¯1=$16.80 x⎯⎯2=$16.00x¯2=$16.00 σ1 = $3.00 σ2 = $2.25 What is the test statistic for the difference between the means?       Multiple Choice   1.973   1.990   1.300   1.847

Q: What is the scale of measurement that is most appropriate for each of the following variables? •…

A: For any measurement , data can be classified as being on one of four scales: nominal, ordinal,…

Q: A population has mean 18 and SD 6. What percent of samples of size 9 have a mean of 20 or more?…

A:

Q: Convert the following to T-score: a. Raw score of 110; mean of 55; SD of 19 b. Raw score of 85; mean…

A:

Q: V. Describe the sampling distribution of p. N = 20,000, n = 600, p = 0.3 %3D

A: Sampling Distribution of Proportion:

Q: Can you give the statistical table you have used to get the 1.96? Thank you.

A: Given that, The confidence level is, 0.95 The level  of significance is,

Q: . An ANOVA conducted to compare the mean production of treated waste water (litres/hour) in six…

A: Given information: The descriptive statistics (sample means and sample sizes) for each of the 6…

Q: An animal biologist wishes to test for a difference in mean weights of a single species of fish…

A: From the provided table SSB = 17.04 and df = 2 a) The required value of MSB or MST can be obtained…

Q: Use the data below to test the claim that the weight loss was greater with the low fat diet compared…

A:

Q: The significance level of a hypothesis test is, α = 0.01. The P-value of this hypothesis test is…

A: Solution-: We determine the conclusion of the hypothesis test.

Q: In a survey of 1000 people, mean amount of money they spend on buying Starbuck’s coffee per month is…

A: Solution: a. Let X be the amount of money. From the given information, n=1000, x-bar=19.40, Z=1.96…

Q: The heights of women aged 20– 29 in the United States are approximately Normal with mean 64.2 inches…

A: The data for heights of both women and men are normally distributed. The mean is 64.2 inches and…

Q: A supervisor is asked to score two groups of employees on how difficult he thinks their job is to…

A: Given   job difficulty 1 job difficulty 2 3 11 9 10 10 17 2 15 13 15 2 4 7 16

Q: What is the margin of error for a 99% CI for a mean, when the sample size is 12, the sample average…

A: Given: Sample size, n = 12 Sample mean, x = 52 Sample standard deviation, s = 13 It follows a…

Q: Suppose that six individuals are interested in taking part in a study relating BMI to a number of…

A: Given: The following 6 numbers represent the individuals’ BMI (kg/m2). 25.78, 21.06, 36.54, 29.51,…

Q: For the test described in Scenario A, 32 apartments were measured and the sample mean found to be…

A: Given that  Sample size n =32 Sample mean =1237 Standard deviation =45

Q: Using the following analysis:   Source d.f. Sum of Squares Model 3   213.88125 Error 20…

A: We have given the following table Source d.f. Sum of Squares Model 3 213.88125…

Q: As a new type of environmentally friendly, natural air freshner is being developed, it is tested to…

A: Given:Temperature 1Temperature 2Humidity 1353525312637Humidity 2282322192118

Q: Calculate F statistic for the following. If SSB = 15.62 (dfb =4) and SSW = 6.39 (dfw = 16)

A: SSB = 15.62 (dfb =4) and SSW = 6.39 (dfw = 16)

Q: a. Use a = .05 to test for a difference among mean comfort scores for the three types of browsers.…

A: We perform ANOVA the step by step procedure in excel as below: Enter the data into excel sheet. Go…

Q: A study has been conducted of the airspeed of various bird species. You would like to specify the…

A:

Q: he number of passengers (in thousands) for the leading U.S. passenger airlines in 2004 is indicated…

A: Obtain the frequency distribution table and the cumulative frequency distribution   The frequency…

Q: Which of the following is the appropriate null and alternative hypotheses for the test described in…

A:

Q: Þröstur compares the price of wireless network or not. In total, he explores 38 cafes, 19 with…

A: The t-test is the small sample test, which is used to find the significant difference between the…

Q: The mean math achievement for the older students is 50.95. The mean math achievment for the younger…

A: Introduction - Means - Means (average ) are used to measure across a diverse group of samples ,…

Q: Choose the correct answer below. OA. A residual is the difference between an observed value of the…

A: Here we have to define the definition of residual

Q: A researcher wants to evaluate the effectiveness of a patch he thinks will significantly decreases…

A:

Q: Krista was looking at the Daily Mean Pressure for Leeming from May to October 1987. She used…

A: b) Arrange the given in ascending order as follows: S.No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16…

Q: What is the margin of error for a 95% CI for a mean, when the sample size is 8, the sample average…

A: given data sample size (n) = 8sample mean ( x¯ ) = 152sample standard deviation (s) =3095% ci for…

Q: Convert the following to z-score: c. Raw score of 86; mean of 55; SD of 17 d. Raw score of 115; mean…

A: we know that  Z-score=X-μσwhere X=Raw scoreμ=meanσ=SD

Q: In an experiment to determine whether there is a systematic difference between the weights obtained…

A: In this case the sample units are independent to each other and, the population observations are…

Q: Assuming the lowest decile of men receive an average of $800/month in Social Security, while the…

A: Introduction:Observe the “Born in 1940” curve in the given graph. The average of the lowest decile,…

Q: Two accounting professors decided to compare the variance of their grading procedures. To accomplish…

A: Two accounting professors decided to compare the variance of their grading procedures.

Q: The Global Business Travel Association reported the domestic airfare for business travel for the…

A: Here, the data of domestic airfare for current year and previous year is given.The sample size is…

Q: In the General Social Survey, respondents were asked whether they favor cuts in governmental…

A: Median is the middlemost value of the dataset that has 50% data less than or equal to it and 50%…

Q: To stimulate reasonable pricing, the city offers a free permit to the sellers whose price of a…

A: Let X be the highest price from normal distribution with mean (μ) = 3.22 and standard deviation (σ)…

Q: Sixteen out of 35 high school seniors ran the mile in less than 6.25 minutes. At a=0.01, is there…

A: Solution: Give Total =60 X+ =35 remaing. X-=25 The test statistic is X = \min\{X^+, X^-\} =…

Q: Do wearable devices that monitor diet and physical activity help people lose weight? Researchers had…

A: Consider μd is the mean weight difference, weight after 24 months minus weight before using the…