piers. Suppose that a reading of 38 waves showed an average wave height of x = 16.7 feet. Previous studies of severe storms indicate that ? = 3.5 feet. Does this information suggest that the storm is (perhaps temporarily) increasing above the severe rating? Use ? = 0.01.   a) What is the value of the sample test statistic? (Round your answer to two decimal places.)

The age of a patient at the time of diagnosis of colon cancer was tracked—50 males and 50 females. The ages are: M: 91 87 87 85 83 81 80 79 78 77 75 75 74 73 72 72 71 71 70 69 69 68 66 66 65 63 63 63 62 62 62 61 61 61 60 60 59 59 57 56 55 55 53 53 51 48 45 39 38 29 F: 94 93 92 90 89 88 87 86 86 85 85 83 81 79 79 78 77 77 76 76 76 76 75 74 74 73 72 72 71 70 68 68 67 66 66 65 65 65, 64 64 64 63 60 59 58 55 54 53 51 48 Calculate the value for: (1) 85th percentile for the combined ages.  (2) Percentile for an age of 60 for females.__________th(3) Percentile for an age of 75 for males.______________th

The height of bedridden patients is often estimated from the length of the patient's ulna, the distance between the point on the elbow and the prominent bone on the wrist. Eight men over the age of 65 had both their height (in centimeters) and the length of their ulna (in centimeters) measured. The data are given in the table below. Ulna length (cm) 20 23 24 26 27 29 30 31 Height (cm) 160 163 166 168 171 178 182 186 Let x denote a patient's ulna length (in cm) and y denote the patient's height (in cm). Assume that the population distributions for both ulna length and height are approximately normal. The following summary measures were obtained from the data. X = 26.25, ỹ = 171.75, SSxx = 99.5, SSyy= 609.5, SSxy= 238.5 ху We wish to find the least squares regression line for the data in this table using ulna length as an independent variable and height as a dependent variable. Estimate the y-intercept of the least squares regression line. Enter your answer using three decimal places.

According to research, holiday shoppers spent an average of $364 over a holiday weekend in 2008. The accompanying data show the amount spent by a random sample of holiday shoppers during the same weekend in 2009. Complete below. Click the icon to view the data table. a. Retailers were concerned that the recent economic downturn was going to affect holiday sales. Does this sample support these concerns using a = 0.10? Determine the null and alternative hypotheses. Choose the correct answer below. O A. Ho: µS 364 and H1: µ > 364 More Info B. Ho: H= 364 and H,: µ #364 C. Ho: µ2 364 and H,: µ<364 $433 $268 $374 $239 $215 $211 O D. Ho: H#364 and H,: µ = 364 $356 $437 $382 $400 $327 $66 %3D $415 $429 $381 $283 Determine the critical value(s). The critical value(s) is(are) Print Done (Round to three decimal places as needed. Use a comma to separate answers as needed.) Determine the test statistic, t̟. Click to select your answer(s).