Ho: μ1=μ2=μ3 |
Ha: not all the population means are equal or at least one of the mean is different from others |
Source | df | SS | MS | F |
regression | 2 | 416.333 | 208.167 | 15.78 |
error | 21 | 277.000 | 13.190 | |
total | 23 | 693.333 |
option A: p value <=0.05
An experiment was conducted at a small supermarket for a period of 8 days on the...
please answer all the parts of the question
changed on three diferent occasions Sales, in hundreds of dollars, of the dog food per day for bve three shelf heights are givon below Based on the data, is there a signiscant dillerence in the average the dog food was randomly daily sales of this dog food based on shelf height? Use a 0 05 level of significance 囲Okxee icon to view the data table of dogfood sales 1:□(Rand to two decinal...
Use the following information to answer questions 1-8. A statistics professor wishes to investigate the relation between a student’s final course grade and grades on a midterm and a major project. A random sample of 10 students is taken. X1 X2 Y Midterm Project Course Grade 88 90 83 95 80 83 91 80 92 94 93 94 95 90 89 93 58 77 91 90 91 87 74 73 82 92 70 87 74 75 The Excel output for the regression...
Question 9-15 are based on the random sample below which is obtained to test the following hypothesis about the population mean. Test the hypothesis that the mean is less than 80. 80 100 81 93 80 57 98 90 71 56 58 78 59 55 55 77 72 78 56 94 98 59 93 86 89 62 60 66 59 71 96 97 94 69 64 77 87 77 64 90 90 95 98 99 56 69 72 81 95...
Use minitab if possible. If it is, please show step by step
process of how you did it.
Surface roughness of steel is investigated. The method of surface manufacturing largely determines roughness of the surface. One of the parameters to describe the roughness is Rz, the maximum height of the surface irregularities profile. R (in um) is measured for 21 random places on the surface of forged details and 21 random places on the surface of casted details as follows....
Due Sunday. Apr 14 All answers will be saved automatically pm PDT All Question1 A high school teacher is interested to compare the average time for students to complete a standardized test for three different classes of students The teacher coll classes and the dataset is provided below. lects random data for time to complete the standardized test (in minutes) for students in three different The teacher is interested to know if the average time to complete the standardized test...
Listed below are time intervals (min) between eruptions of a geyser. Assume that the "recent" times are within the past few years, the "past" times are from around 20 years ago, and that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. Does it appear that the mean time interval has changed? Is the conclusion affected by whether the significance level is 0.10 or 0.01? Recent...
Student stress at final exam time comes partly from the
uncertainty of grades and the consequences of those grades. Can
knowledge of a midterm grade be used to predict a final exam grade?
A random sample of 200 BCOM students from recent years was taken
and their percentage grades on assignments, midterm exam, and final
exam were recorded. Let’s examine the ability of midterm and
assignment grades to predict final exam grades.
The data are shown here:
Assignment
Midterm
FinalExam...
Boats (tens of
thousands) Manatees
66 55
65 38
69 34
67 49
74 42
75 59
78 53
84 69
81 82
87 79
90 81
94 93
92 74
98 67
99 78
102 91
100 73
98 91
97 97
93 82
88 89
87 80
90 71
92 68
idrresponding numbe o ms for 880.000 registered Use the accompanying paired data consisting of registered boats (tens of thousands) and manatee fatalities from boat encounters. Let x...
Do men score lower on average compared to women on their statistics test? test scores of nineteen randomly selected male statistics students and twenty-eight randomly selected female statistics students are shown below. Assume Equal Variances. Male: 86, 83, 74, 76, 80, 63, 94, 91, 65, 95, 57, 91, 84, 85, 79, 76, 87, 94, 64 Excel Female: 88, 99, 82, 90, 65, 99, 76, 93, 93, 69, 70, 89, 96, 83, 74, 77, 90, 91, 100, 78, 76, 100, 78, 84, 100,...
REGRESSION ANALYSIS The owner of large chain of ice-cream stores would like to study the effect of atmospheric temperature on sales during the summer season. Temperature is the independent variable. A random sample of 21 days is selected with the results given as follows: DAILY HIGH SALES PER STORE (Y) TEMPERATURE (X) (F) DAY 48 25000 2 28000 60 3 63 28500 4 75 30500 5 80 33600 82 32500 6 7 85 36800 8 88 39000 41000 9 90...