A notable indicator of a baby's health is the weight gained in the first year of the baby's life. Assume that the population of all such weight gains for baby is approximately normally distributed. A study claimed that the mean of this population is 5.94 kg. As a practicing pediatrician, you want to test this claim. you select a random sample of 15 baby girls, and you record the weight each gained in their first year. Follow the steps below to construct a 95% confidence interval for the population mean of all the weight gains for baby girls in their first year. Then state whether the confidence interval you construct contradicts the study's claim. (If necessary, consult a list of formulas.) (a) Click on "Take Sample" to see the results for your random sample. Number of baby girls Take Sample 15 Sample mean 5.658 Sample standard deviation 1.869

Roll a pair of die 36 times, and draw a bar graph of all the outcomes. Using the data, find the mean, the variance, and the standard deviation for this model.

should have the right to marry. (The 2014 data were collected before the 2015 U.S. C2. GSS 2014 and GSS 2018 respondents were asked their opinion on whether homosexuals 30 measured on a 5-point scale from strongly agree (1) to strongly disagree (5). Supreme Court decision granting same-sex couples the right to marry. Responses wer measured on a 5-point scale from strongly agree (1) to strong!y aisagiee (2). Cumulative Percentage Homosexuals Should Have Right to Marry (2014) Percentage Frequency 32.5 32.5 Strongly agree 251 57.5 25.2 Agree 195 67.3 Neither agree nor disagree 9.6 74 79.2 Disagree 92 11.9 100.0 Strongly disagree 161 20.8 Total 773 100.0 Homosexuals Should Have Cumulative Right to Marry (2018) Frequency Percentage Percentage Strongly agree 293 39.5 39.5 Agree 200 27.0 66.5 Neither agree nor disagree 70 9.4 75.9 Disagree 67 9.0 84.9 Strongly disagree 111 15.0 99.9 Total 741 99.9 a. What is the level of measurement for this variable? b. What is the mode for 2014? For 2018?

Because colas tend to replace healthier beverages and colas contain caffeine and phosphoric acid, researchers wanted to know whether cola consumption is associated with lower bone mineral density in women. The accompanying data lists the typical number of cans of cola consumed in a week and the femoral neck bone mineral density for a sample of 15 women. Complete parts (a) through (f) below. Click the icon to view the women's data. (a) Find the leas ŷ=x+ X (Round to four d Colas per Week and Bone Density colas per week 0 0 1 1 2 2 33556670 4 8 Bone Mineral Density (g/cm³) 0.908 0.896 0.887 0.877 0.866 0.850 0.829 0.836 0.815 0.800 0.795 0.773 0.771 0.760 0.735 X

Regan is interested in comparing the outdoor activity of people from different parts of the country. He collects data from people from the East Coast, Midwest, and West Coast and assesses how many minutes per day they spend exercising. What test. should i use?   ANOVA Paired samples t test Independent samples t test Correlation

This histogram shows the heights of 20 students in a statistics class. Explain why it is not appropriate to find summary statistics for this distribution. Frequency 4- 3- 2- 1- T 0+ 60 65 70 75 Height (Inches) Choose the correct answer below. OA. Since there appear to be two modes, this data probably represents men and women and should be split into those two groups before finding any summary statistics. OB. The number of data values is too small for summary statistics to be meaningful. OC. Since the data appear to be bimodal, no other measures of center or spread can be calculated. OD. Since the distribution is not symmetric, summary statistics would be meaningless.

Listed below are pulse rates (beats per minute) from samples of adult males and females. Find the mean and median for each of the two samples and then compare the two sets of results. Does there appear to be a difference? 86 Male: 73 90 52 57 64 63 55 97 64 95 54 93 61 60 Female: 68 88 93 90 79 65 85 62 91 92 73 90 78 82 75 D C Find the means. The mean for males is beats per minute and the mean for females is beats per minute. (Type integers or decimals rounded to one decimal place as needed.)

The first step in a Wilcaxon rank sum test is to combine the data values in the two samples and assign a rank of 1 to the: observation that occurs most frequently. middle observation. O largest observation. smallest observation.

In a study conducted to examine the quality of fish after 7 days in ice​ storage, ten raw fish of the same kind and approximately the same size were caught and prepared for ice storage. The fish were placed in ice storage at different times after being caught. A measure of fish quality was given to each fish after 7 days in ice storage. The sample data are shown​ below, where​ "Time" is the number of hours after being caught that the fish was placed in ice storage and​ "Fish Quality" is the measure given to each fish after 7 days in ice storage​ (higher numbers mean better​ quality). Which variable would be considered the response​ variable?   Fish Time: 0  0  2  3  5  6  7  9  11  12 Fish Quality 8.5  8.4  8.0  8.1  7.8  7.6  7.3  7.0  6.8  6.7     Choose the correct answer below. A.Fish Quality B.Time C.Neither variable could be considered a response variable.

The table below shows the frequency of AP Biology scores for a high school class. AP Score Frequency 1 5 2 7 3 6 4 4 5 3 Find the mean and median. Mean = 1.67 and Median = 2 Mean = 2.72 and Median = 3 Mean = 2.72 and Median = 7 Mean = 4.53 and Median = 4 Mean = 4.53 and Median = 3