1. State hypothesis 2. Decide directional/nondirectional 3. State the 1. Sample statistic 2. Test statistic
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- 72a)It is a fact that cities with more churches also have more murders. If I were to use that information to claim that religion is bad for society because it encourages people to become murderers, this would be an example of which of the following misuses of statistics? Loaded questions. False causality. Biased samples. Data dredging. Data manipulation.Choose the best correct answer 1) A variable that is associated with both the outcome and the possible cause of the outcome is potentially A. Dependent variable C. Confounding variable B. Independent variable D. None of the choices 2) In a cross-sectional study on elderly hypertensive patients in Palestine. Which of the following should be considered an inclusion criterion for the sampling method? A. Being a teenager B. Being a diabetic patient C. Being at higher risk to have hypertension D. Being an elderly Palestinian 3) Objects ordered on a scale that has equal distances between points on the scale is an example of A. Nominal B. Ordinal C. Interval D. Ratio 4) Self-administered questionnaire should be conducted in all of the following cases, except A. You do not want to allow respondents to clarify questions C. You want less bias in responses D. Respondents have poor literacy B. You want to provide anonymity to the respondents 5) Pilot study is conducted usually by the researchers…Select the statement that is NOT accurate about the statistical concept of "central tendency" A) Most commonly measured with the mode, median, and arithmetic mean. B) Can be measured for both qualitative and quantitative data. C) The most typical or likely value of a frequency distribution of a variable. D) Most important information about a frequency distribution of a variable.
- A community is considering raising funds to pay for improvements to the community swimming pool. To measure the level of interest, commùnity leaders survey patrons of the community pool on a Saturday afternoon. Of the 103 patrons surveyed, 87 approve of raising funds to pay for improvements. Which of the following is a true statement regarding the design and results of the survey? O This is a convenience sample and is representative of community support. O This is a convenience sample and likely overestimates support for raising funds. O This is a voluntary response sample and likely overestimates support for raising funds. O This is a voluntary response sample and likely underestimates support for raising funds. Mark this and return Save and Exit Next SubmitA hypothesis regarding the weight of newborn infants at a community hospital is that the mean is 23.1 pounds. A sample of seven infants is randomly selected and their weights at birth are recorded as 21.1, 26.1, 27.1, 28.1, 25.1, 32.1, and 32.1 pounds. What are the degrees of freedom? Multiple Choice 7 31.7 6 23.11. A study asked students to report their height and then compare to the actual measured height. Assume that the paired sample data are simple random samples and the differences have a distribution that is approximately normal. Reported Height Measured Height 67.9 69.9 64.9 68.3 68 71 63 70 71 60 65 64 54 63 66 72 70.3 60.6 64.5 67 55.6 74.2 65 70.8 a) State the null and alternative hypotheses. b) Use EXCEL to construct a 99% confidence interval estimate of the difference of means between reported heights and measured heights. Attach your printout to this question, where the reported height is column A, measured height in column B, and the difference in column C. i) Open Excel and click DATA on the ribbon of the Excel. ii) Click Data Analysis. If Data Analysis is not available, please follow the instructions in Assignment 1. iii) Select Descriptive Statistics and click OK. iv) Enter the range of the heights including the label (A1:A13). v) Select Labels in First Row. vi) Select Summary…
- Four scenarios of statistical studies are given below. Decide which study uses a population parameter. Answer O Lakeside Family Dentistry reported that 6 of the 15 patients who came in for a regular cleaning one day had at least one cavity. O As part of her senior project, Kaisa asked 84 of her classmates if they voted in the last presidential election. 39 said yes. O of 351 dog owners who were surveyed, 70 reported owning two dogs. The average finish time for the Ironman, Kona was 11:32 for the 1883 finishers, with an average swim time of 1:14, an average bike time time of 4:14.Would the sampling distribution be wider or narrower?46) The between-group varian ce and the within-group variance are sometimes referred to as 46) A) main effects. C) an ANOVA summary table. B) interaction effects. D) mean squares. noring 4 arauns to tect if they hae the ca aanc There are 64 5
- 6) The mean is defined as the most frequently occurring or most common value in any given data set. Select one: True False14) n gall up poll of 1125 adults, it was found that 47% fly never or rarely. Use a 5% significance level to test that the percentage of adults who fly never or rarely is 50%. (use p-value approach) a. Claim b. Ho H1 c. P-value d. Reject Ho Do not reject Ho e. Write a statement about the claim1. Create a word problem regarding the given condition for the item. Do not forget to solve the problem and include the answer. The word problem must be related to hypothesis testing and population proportion. TOPIC: SPREAD OF VIRUS AND BACTERIA You can choose your own level of significance value, As long as the given condition from the problem is still met which is the percentage (0.85) and it should be a non-directional tailed test meaning it should be a two-tailed test (not equal to sign is the sign of the alternative hypothesis)