If you have a 4x4 frequency table, then the critical value of chi-square would be based on ___ degrees of freedom.
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If you have a 4x4 frequency table, then the critical value of chi-square would be based on ___ degrees of freedom.
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- Look at the relative frequency table above. What is P(X = 3)?Consider the following frequency table obtained by rolling a six-sided die 87 times. Result Frequency Relative Frequency Cumulative Frequency 1 20 * * 2 * 0.126 * 3 * * 50 4 11 * * 5 * 0.08 * 6 * * * Fill in the frequency table. Provide the number of rolls that resulted in a 6Although the calculated value can be zero in a Chi-square test, which of the following best describes the possible calculated value in a Chi-square test? A. It can be positive or negative but is always a whole numberB. It can be positive or negative and can be a whole number or a decimalC. It is always positive and can be a whole number or a decimalD. It is always a positive whole number 2. What is meant by the term observed frequencies (O)? A. The frequencies found in the sampleB. The frequencies that are hypothesized for the population being examinedC. The frequencies calculated from the null hypothesisD. The frequencies found in the population 3. Which of the following accurately describes the expected frequency (E) value in a oneway Chi-square test? A. It is always a whole number or a decimalB. It is always a whole numberC. It can be a positive or a negative valueD. It is always a value equal to or greater than 40
- At a meeting of information systems for regional offices of a national company, a survey was taken to determine the number of employees the officers supervise in the operation of their departments, where X is the number of employees overseen by each information systems officer. Table X_____________________ Frequency 1 _____________________7 2 _____________________5 3 _____________________11 4 _____________________8 5 _____________________9 Referring to the Table above, how many regional officers are represented in the survey results?Given screenshot is the outcome of an exercise program. Use Chi-square analysis to understand Male Weight Loss by joining the Exercise Program. Assume the Critical Value of 3.84.In the manufacturing of a certain scientific instrument great importance is attached to the life of a particular critical component. This component is obtained in bulk from two sources, A and B, and in the course of inspection, the lives of 1000 of the components from each source are determined. The following frequency tables are obtained: - [3] Source A Source B Life (hours) No of components Life(hours) No of Components 1000-1020 1020-1040 1040-1060 1060-1080 1080-1100 1100-1120 40 x 364 372 85 43 1030-1040 1040-1050 1050-1060 1060-1070 1070-1080 1080-1090 339 136 25 20 130 350 Find missing value of x and Standard deviation, when = 1059.90 for each source and compare them.
- The frequency distribution given here shows the percent of organic sulfur inIllinois No. 5 coal. If the utility company will not use coal with a sulfur content morethan 2.25% Determine the percent of the coal in that category?What is the z-score if mu = 89 , sigma=11.5, and x = 82 ?In the manufacturing of a certain scientific instrument great importance is attached to the life of a particular critical component. This component is obtained in bulk from two sources, A and B, and in the course of inspection, the lives of 1000 of the components from each source are determined. The following frequency tables are obtained:- Source A Source A Source B Source B Life (hours) No of components Life(hours) No of Components 1000-1020 1020-1040 1040-1060 1060-1080 1080-1100 1100-1120 40 96 364 372 85 43 1030-1040 1040-1050 1050-1060 1060-1070 1070-1080 1080-1090 339 136 25 20 130 350 i. Find Median and two quartiles for each group. ii. Find mean and Standard deviation for each source and compare them. iii. Which source do you think providing better quality of components and why?
- In the manufacture of a certain scientific instrument great importance is attached to the life of a critical component. This component is obtained in bulk from two sources, A and B, and in a course of inspection, the lives of 1000 of the components from each source are determined. The following frequency tables are obtained:Source A Source BLife (hours) No. of components Life (hours) No. of components1000 – 1020 40 1030 – 1040 3391020 – 1040 96 1040 – 1050 1361040 – 1060 364 1050 – 1060 251060 – 1080 372 1060 – 1070 201080 – 1100 85 1070 – 1080 1301100 – 1120 43 1080 – 1090 350Examine the effectiveness of the measures of dispersion with which you are familiar for comparing the dispersion of the two distributionsIf age were held fixed, but a person put on 15 pounds, what would you expect for the corresponding change in systolic blood pressure? (Use 2 decimal places.)If a person kept the same weight but got 15 years older, what would you expect for the corresponding change in systolic blood pressure? (Use 2 decimal places.)(e) Test each coefficient to determine if it is zero or not zero. Use level of significance 5%. (Use 2 decimal places for t and 3 decimal places for the P-value.) t P value β2 β3Trenny has asked her assistant to prepare estimates of cost of two different sizes of power plants. The assistant reports that the cost of the 110 MW plant is $190,000,000, while the cost of the 210 MW plant is $380,000,000. If Trenny has a budget of only $300,000,000, estimate how large a power plant she could afford using linear interpolation (Enter your answer rounded to one decimal place and in MW eg. XX.X)?