At the beginning of the COVID-19 pandemic, the virus spread at an exponential rate. The CDC began to track the number of positive cases since March 1st. (March 1st = Day 0). The data collected are listed in the table below. Use the table to answer the following questions. Day 2 4 256 4096 Number of Positive Cases 1 16

The manager of a supermarket tracked the amount of time needed for customers to be served by the cashier. After checking with his statistics professor, he concluded that the checkout times are exponentially distributed with a mean of 5 minutes. What propotion of customers require more than 10 minutes to check out?

A nkcschools.instructure.com Next week's value of a certain quantity can be found by multiplying this week's value by 1.57. Which of the following can you conclude? O The quantity grows exponentially. O The quantity decays linearly. O The quantity grows linearly. O The quantity decays exponentially.

Multiple myeloma, or blood plasma cancer is characterized by increased blood vessel formulation (angiogenesis) in the bone marrow that is a predictive factor in survival.  One treatment approach used for multiple myeloma is stem cell transplantation with the patient’s own stem cells. The data in the table below represent the bone marrow micro-vessel density for patients who had a complete response to the stem cell transplant and at the time the complete response was determined.  Patient Before After      1   158    284      2   189    214      3   202    101      4    353    227      5    416    290      6    426    176      7    441    290 Please show work done by hand and/or using Excel formulas, graphing calculator unavailable.  At the 0.05 level of significance, is there evidence that the mean bone marrow micro-vessel density is  higher before the stem cell transplant than after the stem cell transplant?

According to the CDC, cholesterol levels can be reduced by following a healthy diet, getting regular exercise, and reducing the amount of alcohol consumed on a weekly basis. One method of monitoring overall cholesterol levels is to calculate your cholesterol ratio (LDL/HDL), in general a cholesterol ratio between 3.5 and 5.0 is considered to be healthy for most adults. Suppose you are a clinical researcher testing the effects of these lifestyle changes on patient cholesterol levels. In order to determine if following these guidelines helps to reduce overall cholesterol, a total of 18 participants (N = 18) with moderate to high cholesterol ratios (i.e., 3.91 to > 5.0) were recruited for a healthy lifestyle study and their cholesterol ratio was calculated three times over a six week period: Week 0 (baseline), Week 3, and Week 6.  Using the variables "Week 0", "Week 3", and "Week 6" in the data set, conduct a One-Way, Within Subjects (AKA Repeated Measures) ANOVA, at α = 0.05, to see…

According to the CDC, cholesterol levels can be reduced by following a healthy diet, getting regular exercise, and reducing the amount of alcohol consumed on a weekly basis. One method of monitoring overall cholesterol levels is to calculate your cholesterol ratio (LDL/HDL), in general a cholesterol ratio between 3.5 and 5.0 is considered to be healthy for most adults. Suppose you are a clinical researcher testing the effects of these lifestyle changes on patient cholesterol levels. In order to determine if following these guidelines helps to reduce overall cholesterol, a total of 18 participants (N = 18) with moderate to high cholesterol ratios (i.e., 3.91 to > 5.0) were recruited for a healthy lifestyle study and their cholesterol ratio was calculated three times over a six week period: Week 0 (baseline), Week 3, and Week 6.  Using the variables "Week 0", "Week 3", and "Week 6" in the data set, conduct a One-Way, Within Subjects (AKA Repeated Measures) ANOVA, at α = 0.05, to see…

An important characteristic on Google Trends is the use of A. Annotations B. cross section data С. Кеywords D. none of these

Which data set is exponential?     (0, 0.1), (1, 0.5), (2, 2.5), (3, 12.5)     (0, -1), (1, 0), (2, 7), (3, 20)     (0, -1), (1, 0.5), (2, 2), (3, 3.5)     (0, -1), (1, 2), (2, 11), (3, 26)

Previously, De Anza's statistics students estimated that the amount of change daytime statistics students carry is exponentially distributed with a mean of $0.88. Suppose that we randomly pick 25 daytime statistics students. Find the probability that an individual had between $0.80 and $1.00. Graph the situation, and shade in the area to be determined.

A sociologist studying the justice system has just written a paper detailing her findings after examining the records of thousands of inmates. Among other things, she looked at the time spent in prison by inmates who had been sentenced to 5– 10 years for a felony conviction. The histogram below, which appears in her paper, summarizes the time spent in prison for each of 50 such inmates. Frequency 20 20- 15 15- 10- 5 5 5 5+ 0- 20 60 Time spent in prison (in months) 40 80 100 120 Based on this histogram, estimate the standard deviation of the sample of 50 prison terms. Carry your intermediate computations to at least four decimal places, and round your answer to at least one decimal place. (If necessary, consult a list of formulas.)