Consider the following data: 2.1, 4.6, 2,7.3, 0.5, 3.1,8,0.9,9,9.7. Calculate the inter-quartile range (to 3 decimal places).

Q: Dr. Spring is a consultant for the National Youth Organization of long jumpers. His goal is to…

A: Solution So we can write the regression equation as length of jumps =65.5156+1.0948*contestant…

Q: In a trial of 185 patients who received 10-mg doses of a drug daily, 48 reported headache as a side…

A: We have given that,  Favorable cases (X) = 48 and sample size (n) =185 Then,  We will find sample…

Q: he number of cans of soft drinks sold in a machine each week is recorded below. Develop forecasts…

A: Introduction: We need to forecast using the three-week weighted moving average method, and obtain…

Q: Variable (a) Duration (in minutes) of a call to a customer support line (b) Color vision status…

A: It is given that the variables with type of variable and level of measurements.

Q: Calcium levels in people are normally distributed with a mean of 9.7mg/dL and a standard deviation…

A:

Q: Use this small data set: X1 = 8, X2 = 9, X3 = 4, X4 = 4, X6 = 4, X5 = 8, X7 = 1, X3 = 1 8 Please…

A:

Q: 12.2 12.2 12.5 13.2 13.2 13.5 What terms can be used to classify the variable of interest in this…

A: It is given that a botanist grew 24 pepper plants on the same greenhouse bench.

Q: A random sample of 5000 people was conducted to determine whether the proportion of Indiana…

A: sample size(n)=5000x=2773sample proportion()=population proportion(p)=0.57

Q: ne the test statistic. Round to two decimal places as needed.

A: Given:Consider the Community college transfer as first sample and No Transfer as the second sample.…

Q: "Durable press" cotton fabrics are treated to improve their recovery from wrinkles after washing.…

A: Given,  Permafresh - 15,13,16,12,11 Hylite - 18,14,19,16 α = 0.02

Q: What percent of the data fall below the 1st quartile?   1.  0% 2. 25% 3. 50% 4. 75% 5. 100%

A: The first quartile is denoted by Q1 and this is the median of lower half of the data set.

Q: 2. The ages of the 189 people were recorded in a clinical study. The data have been partially…

A: The given data is as follows,…

Q: a study was done involving data from all major US cities that compares the number of parks in each…

A: A study was performed based on the data from all major US cities that compares the number of parks…

Q: What is the most frequent number of over-the-limit items for this data set? ans = What is the…

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Q: The amount of sodium was measured for a sample of 30 different breakfast cereals.  The sample mean…

A: Givensample size(n)=30Mean(x¯)=220standard deviation(s)=77x=408

Q: Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest…

A: Given: highest speed=74.3 mean(x)=15.94 s=22.26

Q: Heights (cm) and weights (kg) are measured for 100 randomly selected adult males, and range from…

A: Given regression equation is y=-107+1.03x If x=184 y=?

Q: The 6 participants in a weight-loss class lost the following weights (in pounds) after three weeks…

A: Number of samples (n) =6Data of weight loss : 3, 6, 4, 4, 5, 2Find the population standard deviation…

Q: x 1.8 2.3 6.7 11.3 16.7 25.2 26.9 27.9

A: Percentile is the value in the data set below which certain percentage of the data lie.   The…

Q: A researcher wants to know if feelings of general happiness vary by race? Their obtained frequencies…

A: For the given data Use chi square test

Q: Listed below are the measured radiation absorption rates (in W/kg) corresponding to 11 cell phones,…

A:

Q: Individuals with calcium levels in the bottom  10%  of the population are considered to have low…

A: Consider X be a random variable that represent the calcium level. It is normally distritubuted with…

Q: A doctor wanted to determine whether there is a relation between a male’s age and his HDL (so-called…

A: As per our guidelines, we are allowed to answer first three sub-parts only. Thanks Given Data :…