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QUESTION FIVE (20 MARKS) a) The marks obtained in a Business Statistics CAT are normally distributed...
The marks obtained in statistics in a certain examination are found to be normally distributed. If...
The marks obtained in statistics in a certain examination are found to be normally distributed. If 15% of the candidates got greater than or equal 80 marks and 40% of candidates got less than 50 marks, find the mean and standard deviation of marks.
The marks in a university statistics course are normally distributed with a mean of 68% and...
The marks in a university statistics course are normally distributed with a mean of 68% and a standard deviation of 6%. Sketch the normal distribution for the course. Label the scale on the horizontal axis. Calculate the z-score for a student with a mark of 79%, and explain what it means. Calculate the probabilities for a student to have the following grades: (i) Greater than 60% (ii) Between 70% and 80% 2. The mid tirm grades had a...
Hypothesis Testing . It is claimed that the mean IQ of statistics instructors is greater than...
Hypothesis Testing . It is claimed that the mean IQ of statistics instructors is greater than 120. Write the null and alternative hypothesis statements . A dean at JWU claims that the mean time for students to eam a Master's Degree in Business is at most 5.2 years. Write the null and alternative hypothesis statements. A researcher claims that 65% of voters favor gun control. Determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed The mean...
Hypothesis Testing . It is claimed that the mean IQ of statistics instructors is greater than...
Hypothesis Testing . It is claimed that the mean IQ of statistics instructors is greater than 120. Write the null and alternative hypothesis statements . A dean at JWU claims that the mean time for students to eam a Master's Degree in Business is at most 5.2 years. Write the null and alternative hypothesis statements. A researcher claims that 65% of voters favor gun control. Determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed The mean...
A random sample of size 15 is obtained from a normal population yielding a sample standard...
A random sample of size 15 is obtained from a normal population yielding a sample standard deviation of 20. Test the null hypothesis that the unknown population variance is greater than or equal to 162 versus the alternative that the unknown population variance is less than 162 using a 5% level of significance a. Set up the null and alternative hypotheses, clearly defining any unknown parameters. Note the “=” value is always in the null hypothesis. b. Find a test...
Question 8 to question 19 are true or false Subject: ADMN210- Applied Business Statistics 8) A...
Question 8 to question 19 are true or false Subject: ADMN210-
Applied Business Statistics
8) A hypothesis test always contains the possibility of committing one of two types of errors callled Type I and Type lI errors d u e avoda b 9) The null hypothesis is rejected if the p-value is greater than the significance level 10) The probability of committing a Type I error is called the level of significance 11) In hypothesis testing the statistical conclusion is...
(a) In 2000, the scores of students taking SATs were normally distributed with mean 1019 and...
(a) In 2000, the scores of students taking SATs were normally distributed with mean 1019 and standard deviation 209. (i) What percent of all students had the SAT scores of at least 820? [3 marks] (ii) What percent of all students had the SAT scores between 720 and 820? [3 marks] (iii) How high must a student score in order to place in the top 20% of all students taking the SAT? [4 marks]
Question 1 to 11, True or False? Applied business statistics 1) The width of the confidence...
Question 1 to 11, True or False? Applied business statistics
1) The width of the confidence interval depends only on the desired level of confidence 2) When population standard deviation is unknown, sample standaird deviation is used and the interval estimation is based on values from the t- rather than the z-distribution n 3) The z value for a 98% confidence interval around the point estimate is 2.33 4) In order to construct a 90% confidence interval for the population...
Matric No. 00S1O13 Elementary Statistics QUESTION 2 (20 MARKS) a) Data in TABLE I are the...
Matric No. 00S1O13 Elementary Statistics QUESTION 2 (20 MARKS) a) Data in TABLE I are the tuition fees (in thousand RM) at 35 selected privge institutions in Malaysia for one semester in the year 2018 TABLE 1 39 3435 40 3.73.4 5.7 3.2 33 5.6 5.3 4.93.638 3.7 60 6057 37 53 4.1 4.2 3.1 48 32 38 6.53.2 46 4.4 4.0 3.529 8.2 5.0 4. 6.0 Based on TABLE I above, i. construct a stem and leaf diagram for...
The marks obtained in statistics in a certain examination are found to be normally distributed. If 15% of the candidates got greater than or equal 80 marks and 40% of candidates got less than 50 marks, find the mean and standard deviation of marks.
Hypothesis Testing . It is claimed that the mean IQ of statistics instructors is greater than 120. Write the null and alternative hypothesis statements . A dean at JWU claims that the mean time for students to eam a Master's Degree in Business is at most 5.2 years. Write the null and alternative hypothesis statements. A researcher claims that 65% of voters favor gun control. Determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed The mean...
Hypothesis Testing . It is claimed that the mean IQ of statistics instructors is greater than 120. Write the null and alternative hypothesis statements . A dean at JWU claims that the mean time for students to eam a Master's Degree in Business is at most 5.2 years. Write the null and alternative hypothesis statements. A researcher claims that 65% of voters favor gun control. Determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed The mean...
Question 8 to question 19 are true or false Subject: ADMN210-
Applied Business Statistics
8) A hypothesis test always contains the possibility of committing one of two types of errors callled Type I and Type lI errors d u e avoda b 9) The null hypothesis is rejected if the p-value is greater than the significance level 10) The probability of committing a Type I error is called the level of significance 11) In hypothesis testing the statistical conclusion is...
Question 1 to 11, True or False? Applied business statistics
1) The width of the confidence interval depends only on the desired level of confidence 2) When population standard deviation is unknown, sample standaird deviation is used and the interval estimation is based on values from the t- rather than the z-distribution n 3) The z value for a 98% confidence interval around the point estimate is 2.33 4) In order to construct a 90% confidence interval for the population...
Matric No. 00S1O13 Elementary Statistics QUESTION 2 (20 MARKS) a) Data in TABLE I are the tuition fees (in thousand RM) at 35 selected privge institutions in Malaysia for one semester in the year 2018 TABLE 1 39 3435 40 3.73.4 5.7 3.2 33 5.6 5.3 4.93.638 3.7 60 6057 37 53 4.1 4.2 3.1 48 32 38 6.53.2 46 4.4 4.0 3.529 8.2 5.0 4. 6.0 Based on TABLE I above, i. construct a stem and leaf diagram for...
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