Quèstion 11 The first quartile of the following distribution is Class Frequency 41-49 3. 50-58 6. 59-67 68-76 6. 77-85 4. Oa 54.0 Ob. 63.9 Oc 54 9 Od 58 5
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- Also this after the 2nd picture. (c) By hand, make a histogram and using this histogram select the correct description of the age at which women have their first child. The distribution is: (d) In which age classes do the median and quartiles fall in the ordered list of all maternal ages? Median falls within: Q1 falls within: Q3 falls within:4. In the ordered data: 20, a, 25, 30, 40, b, 49. If the first quartile=23.5 and IQR=19, then the values of a and b are: a=21.5, b=45.5 a=21, b=48 a=22, b=45 a=22.5 , b=45.5 5. Let X-Bin (12, 0.2), then * P (X 2 1) = O 1- 0.212 O 0.812 O1- 0.812 O 0.212I need help with question 7
- Each of the boxplots shown summarizes 24 student scores on a recent test in two different classes. The boxplots are drawn using a common numerical scale. Which of the following must be true? 1. The lower 25% of Class B are much more spread out than the lower 25% of Class A 2. More people scored below the lower quartile for Class A than Class B 3. The distribution for Class B is skewed left and has a noticeable outlier as well, while the distribution for Class A is somewhat skewed right 4.Class A had more people between the median and the lower quartile than Class B. 3.The distribution for Class A is somewhat symmetric, while the distribution for Class B is skewed right with a noticeable outlier as wellQUESTION 8 Find the mode(s) for the given sample data. 20, 38, 46, 38, 49, 38, 49 49 38 39.7 46please answer blank questions only and or ones with a red x next to them.
- A new medication for lowering blood pressure is being tested. Sample 1 has systolic blood pressures for the control group and sample 2 has systolic blood pressures for the experimental group. obs # Sample 1 Sample 2 1 156 154 153 143 155 146 4 151 139 5 157 146 The following questions have to do with a 2-sided test of significance at a=5% to determine if there is a significant difference between the groups. What type of test is this? How many degrees of freedom? What is the absolute value (positive) of the test statistic in step 4 to 2 decimal places? Find the p-value to 4 decimal places. Should you reject the null at 5%? Find the margin of error for a 95% confidence interval on the difference in means to two decimal places. 3.Consider the following data: −10, −10, 0, 3, −10, 3, 3 Step 1 of 3: Calculate the value of the sample Variance. Round your answer to one decimal place. Step 2 of 3: Calculate the value of the sample deviation. Round your answer to one decimal place. Step 3 of 3: Calculate the value of the range.14 2. The test scores, of 16 students are listed below: 44, 46, 51, 57, 60, 63, 65, 70, 75, 76, 85, 87, 90, 94, 95, 97. (b) Find the first quartile of the above data, 87 88.5 58.5 57
- A random survey is collected on the number of children of different age groups who play in government parks and the information is tabulated in the frequency distribution given below: Age (years) Number of children 1 - 2 8 2 - 4 10 4 - 7 18 7 - 9 10 9 - 11 12 11 -15 6…Question 13 The time to complete an exam is approximately Normal with a mean of 43 minutes and a standard deviation of 5 minutes. The bell curve below represents the distribution for testing times. The scale on the horizontal axis is equal to the standard deviation. Fill in the indicated boxes. H = 43 o = 5 H-30 u-20 u+ 20 u+ 30 00 Question Help: e Written Example Message instructor Submit Question Jump to AnswerWomen are recommended to consume 1870 calories per day. You suspect that the average calorie intake is larger for women at your college. The data for the 11 women who participated in the study is shown below: 1799, 1703, 2097, 2112, 1824, 1956, 2072, 2113, 1951, 1872, 2126 Assuming that the distribution is normal, what can be concluded at the a = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Họ: ?v Select an answer v H: ? vSelect an answer c. The test statistic (please show your answer to 3 decimal places.) d. The p-value = e. The p-value is ? f. Based on this, we should Select an answer g. Thus, the final conclusion is that ... O The data suggest that the population mean calorie intake for women at your college is not significantly more than 1870 at a = 0.01, so there is insufficient evidence to conclude that the population mean calorie intake for women at your college is more than 1870. (Please show your…
