A process is monitored for defective items by taking a sample of 200 items each day and calculating the proportion that are defective. Let p; be the proportion of defective items in the ith sample. For the last 30 samples, the sum of the proportions is E P; = 1.64. Calculate the center line and the 30 upper and lower control limits for a p chart.

Which of the following measures involve nominal data? Select one: O a. the score in a baseball game O b. the place of a baseball team in the league standing O c the height of a flagpole d. the number on a basketball player's jersey

Use the provided histogram to answer questions about the number of births for each age group. 1. How many births occurs among women over the age of 40? 2. What percentage of births occurred among women between the ages of 38 and 40?

What are percentiles useful for  a. showing frequency b.comparing values  c. showing concentration

The mean GPA for a 127 residents of the local apartment complex is 1.6. What is the best point estimate for the mean GPA for all the residents of the local apartment complex?

The amount of time a service technician needs to change the oil in a car is uniformly distributed between 11 and 21 minutes. Let X = the time needed to change the oil on a car. c. Find the 50th percentile. Round to the nearest minute.

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 least-squares regression line treating cola consumption per week as the explanatory variable. y=x+( (Round to four decimal places as needed.) Colas per Week and Bone Density colas per week 0 1 1 1 2 2 2 3 5 5 5 6 7 7 7 Print Bone Mineral Density (g/cm³) D 0.906 0.867 0.879 0.869 0.851 0.833 0.834 0.813 0.757 0.761 0.758 0.728 0.698 0.707 0.704 Done - X ●●●

Identify the level of measurement of the data , and explain what is wrong with the given calculation.In a set of data , blood lead levels are represented as 1 for low , 2 for medium , and 3 for high . The average ( mean ) of the 642 blood lead levels is 1.3

In California, we need more rain to sustain the health of our natural environment, argriculture, and economic. A group of statistics students in Oxnard College recorded the amount of rain during 2016-2017 school year, measuring the intensity by the inches of rain, and the results were: Inches of Rain 2. 4 Frequency 4 4 3 1 3 The mean (T) rain intensity: inches (Please show your answer to 1 decimal place.) The median rain intensity: inches The mode rain intensity: inches (Please separate your answers by ',' in the bimodal situation. Enter DNE if there is no mode or if there are more than two modes.) Submit Question N 16 rch home ins prt sc delete 144

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. E Click the icon to view the women's data. ..... (a) Find the least-squares regression line treating cola consumption per week as the explanatory variable. Colas per week and bone density (Round to four decimal places as needed.) (b) Interpret the slope. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. colas per week Bone Mineral Density (g/cm) 0.906 O A. For every unit increase in bone density, the number of colas decreases by (Round to four decimal places as needed.) on average. 1 0.874 1 0.886 Question Viewer В. 0.853 For 0 colas consumed in a…