2. An obstetrician wanted to determine whether the mean number of births was the same for each of the five days of the week. She randomly selected eight days for each of the five weekdays and recorded the number of births on that day in the data table below. Refer to the ANOVA results from Excel.
Monday |
Tuesday |
Wednesday |
Thursday |
Friday |
10023 10265 10283 10456 10691 11189 11198 11465 |
11045 11621 11753 11944 12509 12577 12927 13521 |
11346 11084 11593 11570 11216 12193 11875 11818 |
12023 11171 11903 11745 11233 12132 12433 12543 |
11749 11545 11627 12321 11624 12422 12192 12543 |
SUMMARY
Groups |
Count |
Sum |
Average |
Variance |
Monday |
8 |
85570 |
10696.25 |
279042.5 |
Tuesday |
8 |
97897 |
12237.13 |
633537.8 |
Wednesday |
8 |
92695 |
11586.88 |
136085.3 |
Thursday |
8 |
95183 |
11897.88 |
252402.7 |
Friday |
8 |
96023 |
12002.88 |
166186.1 |
ANOVA
Source Of Variation |
SS |
df |
MS |
F |
P-Value |
F Crit |
Between Groups |
11507633 |
4 |
2876908 |
9.803713 |
1.99E-05 |
2.641465 |
Within Groups |
10270781 |
35 |
293450.9 |
|||
Total |
21778414 |
39 |
a) Test the hypothesis that the mean number of births for each weekday is the same at the ? = 0.01 level of significance. Use the p-value method.
2. An obstetrician wanted to determine whether the mean number of births was the same for...
Births are not, as you might think, evenly distributed across the days of the week. The table includes the average numbers of babies born on each day of the week in 2014 Day Sunday Monday Tuesday Wednesday Thursday Friday Saturday Births 7,371 11,805 12,630 12,155 12,112 12,042 8,344 The boxplots are based on more detailed data from Toronto, Canada: the number of births on each of the 365 days in a year, grouped by day of the week. jo Monday...
Customer Distribution by Weekday: A drop-in auto repair shop staffs the same number of mechanics on every weekday (weekends are not counted here). One of the mechanics thinks this is a bad idea because he suspects the number of customers is not evenly distributed across these days. For a sample of 289 customers, the counts by weekday are given in the table. Number of Customers by Day (n = 289) Monday Tuesday Wednesday Thursday Friday Count 43 48 57 75 ...
Customer Distribution by Weekday: A drop-in auto repair shop staffs the same number of mechanics on every weekday (weekends are not counted here). One of the mechanics thinks this is a bad idea because he suspects the number of customers is not evenly distributed across these days. For a sample of 289 customers, the counts by weekday are given in the table. Number of Customers by Day (n = 289) | Monday Tuesday Wednesday Thursday Friday Count 51 68 55...
Problem 8-2 Calculating Arms Ratio (LO4, CFA1) Construct the Arms ratio on each of the five trading days. (Do not round intermediate calculations. Round your answers to 3 decimal places.) Declining Volume Advancing Volume Stocks Stocks Declining 1,324 1,637 1,332 548 Advancing 1,817 2,337 594,095 682,923 653,360 624,744 1,112,398 511,474 Monday Tuesday Wednesday Thursday Friday 451,449 720,725 174,136 497,210 1,823 2,478 1,664 1,470 Arms Ratio Monday Tuesday Wednesday Thursday Friday
The number of workers needed for a bank is shown below. Monday Tuesday Wednesday Thursday Friday Saturday Sunday 4 5 6 3 8 9 2 Suppose those employees in the same bank are paid $150 per day the first four days and they work a day of overtime at a cost of $350. How should the bank schedule its employees?
Classic Golf Inc. manages five courses in the Jacksonville, Florida, area. The director of golf wishes to study the number of rounds of golf played per weekday at the five courses. He gathered the following sample information. You will need to calculate the average for the five days of the week. This average is the "expected frequency". You are comparing observed frequencies versus the expected frequency. Day Rounds Monday 125 Tuesday 140 Wednesday 120 Thursday 120 Friday 120 At the...
Classic Golf Inc. manages five courses in the Jacksonville, Florida, area. The director of golf wishes to study the number of rounds of golf played per weekday at the five courses. He gathered the following sample information. You will need to calculate the average for the five days of the week. This average is the "expected frequency". You are comparing observed frequencies versus the expected frequency. Day Rounds Monday 120 Tuesday 110 Wednesday 150 Thursday 135 Friday 110 At the...
Can someone please show me how to do these type problems using Excell? Please? Customer Distribution by Weekday: A drop-in auto repair shop staffs the same number of mechanics on every weekday (weekends are not counted here). One of the mechanics thinks this is a bad idea because he suspects the number of customers is not evenly distributed across these days. For a sample of 289 customers, the counts by weekday are given in the table. Number of Customers by...
Classic Golf Inc. manages five courses in the Jacksonville, Florida, area. The director of golf wishes to study the number of rounds of golf played per weekday at the five courses. He gathered the following sample information. Day Rounds Monday 105 Tuesday 150 Wednesday 145 Thursday 120 Friday 105 At the 0.01 significance level, is there a difference in the number of rounds played by day of the week? H0: Rounds played is the same for each day. H1: Rounds...
In a preliminary study to determine whether the installation of a camera designed to catch cars that go through red lights affects the number of violators, the number of red-light runners was recorded for each day of the week before and after the camera was installed. These data are listed here. Can we infer that the camera reduces the number of red-light runners? Day Sunday Monday Tuesday Wednesday Thursday Friday Saturday Before 1 7 21 27 18 20 24 16...