Homework Answers
The statistical software output for this problem is:
From above output, 95% confidence interval will be:
-6.1 < μ1 - μ2 < 1.7
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At age 9, the average weight (21.3 kg) and the average height (124.5 cm) for both...
a. estimate the mean difference in height between boys and girls with a 95% confidence b....
a. estimate the mean difference
in height between boys and girls with a 95% confidence
b. does this interval support the given claim
At age 9, the average weight (21.3 kg) and the average height (124.5 cm) for both boys and girls are exactly the same. A random sample of 9-year-olds yielded these results. Boys Girls Sample size Mean height, cm Population variance Source: www.healthepic.com 50 123.8 98 50 122.8 120 Use u 1 for the average height for boys....
Height of 9-year olds (Independent Samples Z – p – value) At age 9, the average...
Height of 9-year olds (Independent Samples Z – p – value) At age 9, the average weight (28.6 kg) and height (133.3 cm) for both boys and girls are believed to be exactly the same. A random sample of 9 year-olds yielded these results. Is there a statistically significant difference in the heights of boys and girls at age 9? Boys Girls Sample Size 60 50 Mean height, cm 123.5 126.2 Population variance 98 120 Step 1: State the hypotheses....
A pediatrician's records showed the mean height of a random sample of 25 girls at age...
A pediatrician's records showed the mean height of a random sample of 25 girls at age 12 months to be 29.530 inches with a standard deviation of 1.0953 inches. Construct a 95% confidence interval for the population variance. (Round your answers to 4 decimal places.) The 95% confidence interval is from____ to ____
Refer to graph- fill in empty boxes Infant 1 Infant 2 Weight Length (kg) (cm) Weight...
Refer to graph- fill in empty boxes
Infant 1 Infant 2 Weight Length (kg) (cm) Weight Length Weight | Length (kg) Weight Length %ile Age Date Age Date (cm) %ile %ile %ile mo mo 10.4.11 3.15 4.8.1 3.20 49.5 52.1 DOB 1 DOB 61.0 59.0 7.6.1 6.49 1.6.12 5.08 1 10.12 8.30 67.0 6.07 4.4.12 62.7 11 10.11.1 7.55 10.06 71.1 4.11 76.3 12 2 10.5 4.10.13 8.42 76.0 12.76 85.2 12 Birth to 24 months: Girls NAME Length-for-age and...
There are 180 primary schools in a country area having an average of 30 or more...
There are 180 primary schools in a country area having an average of 30 or more people under the age of 21 per class. A sample of 30 schools drawn using systematic sampling with an interval of k= 6. Serial number 1 2 3 4 5 6 7 8 9 10 No. of students 60 200 45 50 40 79 35 41 30 120 Serial number 11 12 13 14 15 16 17 18 19 20 No. of students 300...
Student What is your height in inches? What is your weight in pounds? What is your...
Student What is your height in inches? What is your weight in pounds? What is your cumulative Grade Point Average (GPA) at FTCC or your primary college? How many hours do you sleep each night? 1 67 100 4 7 2 62 105 4 5 3 72 120 4 8 4 61 125 4 7 5 56 105 3.7 6 6 61 120 4 7 7 65 172 3.8 7 8 72 235 3.22 5 9 63 135 4 6...
2 62.8 MEAN = 3 71.9 MEDIAN = 4 69.6 MODE= 5 74.1 RANGE = 6 66.6 MIN. = 7 76.5 MAX.= 8 66.4 STDEV. = 9 73.1 MY HEIGHT =67.00 10 71.6 Z SCORE FOR MY HEIGHT = 11 69.3 12 64.0 13...
2 62.8 MEAN = 3 71.9 MEDIAN = 4 69.6 MODE= 5 74.1 RANGE = 6 66.6 MIN. = 7 76.5 MAX.= 8 66.4 STDEV. = 9 73.1 MY HEIGHT =67.00 10 71.6 Z SCORE FOR MY HEIGHT = 11 69.3 12 64.0 13 70.9 14 62.2 15 63.3 16 67.7 17 65.2 18 64.2 19 69.4 20 71.7 21 64.6 22 69.0 23 71.3 24 69.1 25 71.6 26 75.9 27 66.2 28 67.4 29 64.6 30 69.6 31...
Rthe tollowing typleesis tes·determine the mative hypotheses Also, classify the hypothesis tests ...
rthe tollowing typleesis tes·determine the mative hypotheses Also, classify the hypothesis tests two wid left umi orngiled and The mean local monthly billi for cel phone users in this country was $51.35 in 2001. A hypothesis test is to be performed to determine whether last years mean local mornthily bill for cell phone esomthe2001 51.35 hoose the comect nuil and aitemative hypotheses below μ>$5135 "-: μ<$51.35 Which of the folowing is the corect classification of the yothesis tes O C....
In this exercise, you will investigate the relationship between a worker's age and earnings. (Generally, older...
In this exercise, you will investigate the relationship between a worker's age and earnings. (Generally, older workers have more job experience, leading to higher productivity and earnings.) The following table contains data for full-time, full-years workers, age 25-34, with a high school diploma or B.A./B.S. as their highest degree. Download the data from the table by clicking the download table icon 0 . A detailed description of the variables used in the data set is available here Use a statistical...
C1-T C2 c3 c4 C7 CB SEX AGE cs Св FOOT LE... SHOE PR... SHOE SIZE...
C1-T C2 c3 c4 C7 CB SEX AGE cs Св FOOT LE... SHOE PR... SHOE SIZE HEIGHT 27.8 31.3 11.0 180.3 25.7 29.7 9.0 175.3 1 M 67 2 M 47 3 M 41 26.7 31.3 11.0 184.8 4 M 42 25.9 10,0 177.8 31.8 314 5 M 48 26.4 10.0 182.3 6 M 34 29.2 13.0 185.4 31.9 31.8 7 M 26 26.8 11.0 180.3 8 M 29 28.1 175.3 31.0 29.7 10.5 9.5 9 M 60 25.4 177.8...
a. estimate the mean difference
in height between boys and girls with a 95% confidence
b. does this interval support the given claim
At age 9, the average weight (21.3 kg) and the average height (124.5 cm) for both boys and girls are exactly the same. A random sample of 9-year-olds yielded these results. Boys Girls Sample size Mean height, cm Population variance Source: www.healthepic.com 50 123.8 98 50 122.8 120 Use u 1 for the average height for boys....
Refer to graph- fill in empty boxes
Infant 1 Infant 2 Weight Length (kg) (cm) Weight Length Weight | Length (kg) Weight Length %ile Age Date Age Date (cm) %ile %ile %ile mo mo 10.4.11 3.15 4.8.1 3.20 49.5 52.1 DOB 1 DOB 61.0 59.0 7.6.1 6.49 1.6.12 5.08 1 10.12 8.30 67.0 6.07 4.4.12 62.7 11 10.11.1 7.55 10.06 71.1 4.11 76.3 12 2 10.5 4.10.13 8.42 76.0 12.76 85.2 12 Birth to 24 months: Girls NAME Length-for-age and...
rthe tollowing typleesis tes·determine the mative hypotheses Also, classify the hypothesis tests two wid left umi orngiled and The mean local monthly billi for cel phone users in this country was $51.35 in 2001. A hypothesis test is to be performed to determine whether last years mean local mornthily bill for cell phone esomthe2001 51.35 hoose the comect nuil and aitemative hypotheses below μ>$5135 "-: μ<$51.35 Which of the folowing is the corect classification of the yothesis tes O C....
In this exercise, you will investigate the relationship between a worker's age and earnings. (Generally, older workers have more job experience, leading to higher productivity and earnings.) The following table contains data for full-time, full-years workers, age 25-34, with a high school diploma or B.A./B.S. as their highest degree. Download the data from the table by clicking the download table icon 0 . A detailed description of the variables used in the data set is available here Use a statistical...
C1-T C2 c3 c4 C7 CB SEX AGE cs Св FOOT LE... SHOE PR... SHOE SIZE HEIGHT 27.8 31.3 11.0 180.3 25.7 29.7 9.0 175.3 1 M 67 2 M 47 3 M 41 26.7 31.3 11.0 184.8 4 M 42 25.9 10,0 177.8 31.8 314 5 M 48 26.4 10.0 182.3 6 M 34 29.2 13.0 185.4 31.9 31.8 7 M 26 26.8 11.0 180.3 8 M 29 28.1 175.3 31.0 29.7 10.5 9.5 9 M 60 25.4 177.8...
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