A phlebotomist draws the blood of a random sample of 50 patients and determines their blood types as shown. Complete parts (a) through (i)
(a) Construct a frequency distribution
(b) Construct a relative frequency distribution.
(c) According to the data, which blood type is most common?
(d) According to the data, which blood type is least common?
(e) Use the results of the sample to conjecture the percentage of the population that has type O blood. this an example of descriptive or inferential statistics? Select the correct choice below and fill in the answer box to complete your choice.
(f) Contact a local hospital and ask them the percentage of the population that is blood type O. Why might the results differ?
A. The results might differ because certain hospitals only treat patients if they have blood type
B. The results might differ because there is always variability because the individuals in a survey may not exactly reflect the makeup of the population
C. The results might differ because the results from the study are not likely to be similar to actual patients
(g) Draw a frequency bar graph.
(h) Draw a relative frequency bar graph.
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A phlebotomist draws the blood of a random sample of 50 patients and determines their blood types as shown. Complete parts (a) through (i)
I need help with #4, plz 3. A simple random sample of size n is drawn...
I need help with #4, plz
3. A simple random sample of size n is drawn from a population that is normally distributed. The sample mean is found to be 108 and the sample standard deviation, s, is found to be 10. a) Construct a 96% confidence interval u if the sample size, n, is 25. 4. A random sample of 1005 adult Americans was asked "How would you prefer to pay for new road construction?" Results of the survey...
Use the following information to complete steps (a) through (d) below. A random sample of size...
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A national survey asked people, "How often do you eat out for dinner. (a) Construct a...
A national survey asked people, "How often do you eat out for dinner. (a) Construct a relative frequency distribution of the data. instead of at home?" The frequencies were as follows. Complete parts (a) through (9) Relative Response Frequency Never Response Frequency Rarely Never 252 Sometimes Rarely 569 Most of the time Sometimes 966 Most of the time Always 371 Always (Round to three decimal places as needed.) 68 (b) What percentage of respondents answered "Always"? (Round to one decimal...
To test Ho: = 50 versus H=50, a simple random sample of size n = 40...
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Probability and I A recent Gallup Poll asked a simple random sample o cigarettes in the...
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Hi I would love some help on these problems. It is mainly to ensure I followed...
Hi I would love some help on these problems. It is mainly to
ensure I followed the correct steps to solving these problems
including all graphs and tables. thank you in advance.
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Project I (part II) Manual Problem 1: A researcher visited 30 randomly selected Starbucks locations and recorded t...
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I need help with #4, plz
3. A simple random sample of size n is drawn from a population that is normally distributed. The sample mean is found to be 108 and the sample standard deviation, s, is found to be 10. a) Construct a 96% confidence interval u if the sample size, n, is 25. 4. A random sample of 1005 adult Americans was asked "How would you prefer to pay for new road construction?" Results of the survey...
Use the following information to complete steps (a) through (d) below. A random sample of size n = 31 results in a sample mean of 123.3 and a sample standard deviation of 8.5. An independent sample of size n2 = 50 results in a sample mean of 129.8 and sample standard deviation of 7.3. Does this constitute sufficient evidence to conclude that the population means differ at the x = 0.005 level of significance? (a) What type of test should...
A national survey asked people, "How often do you eat out for dinner. (a) Construct a relative frequency distribution of the data. instead of at home?" The frequencies were as follows. Complete parts (a) through (9) Relative Response Frequency Never Response Frequency Rarely Never 252 Sometimes Rarely 569 Most of the time Sometimes 966 Most of the time Always 371 Always (Round to three decimal places as needed.) 68 (b) What percentage of respondents answered "Always"? (Round to one decimal...
To test Ho: = 50 versus H=50, a simple random sample of size n = 40 is obtained. Complete parts (a) through below Click the icon to view the table of critical t-values (a) Does the population have to be normally distributed to test this hypothesis by using t-distribution methods? Why? O A. No-there are no constraints in order to perform a hypothesis test. O B. No-since the sample size is at least 30, the underlying population does not need...
A random sample of size n= 15 obtained from a population that is normally distributed results in a sample mean of 45.8 and sample standard deviation 12.2. An independent sample of size n = 20 obtained from a population that is normally distributed results in a sample mean of 51.9 and sample standard deviation 14.6. Does this constitute sufficient evidence to conclude that the population means differ at the a = 0.05 level of significance? Click here to view the...
Use the following information to complete steps (a) through (d) below. A random sample of ny = 135 individuals results in xy = 40 successes. An independent sample of n2 = 150 individuals results in x2 = 60 successes. Does this represent sufficient evidence to conclude that P, <P2 at the a = 0.10 level of significance? (a) What type of test should be used? A. A hypothesis test regarding the difference between two population proportions from independent samples. B....
Probability and I A recent Gallup Poll asked a simple random sample o cigarettes in the past week?" Suppose that in fact 20 question. The proportion of the sample who answer this, we simulated 1000 samples of size n=1600 from a populatie smoked cigarettes in the past week. The results of this simula the percentage column and write your answers as decimals done for you as an example.) om sample of 1600 American adults, "Have you, yourself smoked any ose...
Hi I would love some help on these problems. It is mainly to
ensure I followed the correct steps to solving these problems
including all graphs and tables. thank you in advance.
randomly selected weights in ounces represent some of the a biological study on a terret breeding population in Wyoming. 1. The following 5, 9, 6, 6, 9, 11, 8, 3, 5, 5, 5, 9, 7, 9, 11, 11, 23, 5, 8, 9, 6, 8, 7 data type of...
Project I (part II) Manual Problem 1: A researcher visited 30 randomly selected Starbucks locations and recorded the number of cappuccinos sold at each coffee shop on 3/22. He summarized his data in this table: Variable Frequency 8 10 a) In this scenario, identify the following: • Variable • Individual • Sample • How many Starbucks locations sold at least 5 cappuccinos? • What percentage of Starbucks locations sold at least 5 cappuccinos? b) Draw a relative frequency histogram for...
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