A random sample of state gasoline taxes (in cents) is shown here for 12 states. Use the data to estimate the true population mean gasoline tax with 90% confidence assuming normal distribution. 38.4, 40.9, 67, 32.5, 51.5, 43.4, 38, 43.4, 50.7, 35.4, 39.3, 41.

Q: The average number of cavities that thirty-year-old Americans have had in their lifetimes is 9.  Do…

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…

Q: A professor surveys the students in her class as to how many hours per week they spend studying for…

A: Given data1, 1.5, 1.5, 2, 2, 3, 3.5, 4, 4, 4.5, 5, 5, 9, 11, 12Which measure of central tendency is…

Q: 4.7, 5.0, 5.5, 4.2, 5.5, 5.9, 4.7, 5.4, 3.8 - data provided for % peroxide in samples taken.…

A: These are the sample data that have been provided : Observation: % peroxide 1 4.7 2 5.0 3…

Q: The average retirement age in America is 63 years old. Kevin thinks that yoga teachers owners retire…

A: The hypothesized mean is 63 years.

Q: The average house has 10 paintings on its walls. Is the mean larger for houses owned by teachers?…

A: From the provided information, Sample size (n) = 15 Level of significance (α) = 0.05

Q: Before the furniture store began its ad campaign, it averaged 182 customers per day. The manager is…

A: (a)   Determine the type of study.   The type of study used t-test for a population mean.   (b)…

Q: A person is interested in studying the amount of time (in minutes) people spend on social media in…

A: Given, A person is interested in studying the amount of time (in minutes) people spend on social…

Q: b. The null and alternative hypotheses would be: Ho: μî Select an answer H₁: με Select an answer c.…

A: The following information has been given: X 60 56 63 60 72 63 64 59 59 64…

Q: A. Find the mean, median, mode, Q,, Q3, D9, P38, and P7 of each of the following data sets. Make a…

A: Hello! As you have posted 3 different questions, we are answering the first question with 3 sub…

Q: The side-by-side dotplot below displays the arm spans, in centimeters, for two classes. Which…

A: Stem and leaf is the graphical representation of the data. Here we divide the data into two parts…

Q: Assume the samples are random and independent, the populations are nomally distributed, and the…

A: For the given data Perform Anova single Factor

Q: The life span in Honolulu is approximately normally distributed. The mean life span is 77 years. A…

A: Given data is 72,68,81,93,56,19,78,94,83,84,77,69,85,97,75,71,86,47,66,27sample size(n)=20sample…

Q: The average child has 10 toys on their Christmas List. Is the mean different for Christmas Lists of…

A: a. Since sample size is small and population standard deviation is unknown, t-test is appropriate in…

Q: How much does a wild mountain lion weigh? Bill Montana went into the mountains of Idaho and captured…

A: Note: As per the Bartelby guidelines only three sub-parts can be answered. Kindly resubmit the…

Q: The average number of cavities that thirty-year-old Americans have had in their lifetimes is 9.  Do…

A: Given data: 8,5,5,6,5,11,9,7,10,6,9,7,6,6,11,10 Sample Mean, x̄ = Σx/n = 121/16 = 7.5625 Variance,…

Q: The data shows daily study hours reported by 30 students. Construct and analyze a frequency…

A:

Q: Women are recommended to consume 1720 calories per day. You suspect that the average calorie intake…

A: As we are authorized to answer only 3 subparts for each question and that you haven't specified…

Q: The following samples are randomly selected from a normal distribution:   5, 10, 15, 20, 25, 30,…

A: The following samples are randomly selected from a normal distribution:  5, 10, 15, 20, 25, 30, 35,…

Q: For this study, we should use     The null and alternative hypotheses would be:       �0:…

A: as per guidelines i have calculated 3 subparts plz repost for remaining part ... The average number…

Q: Suppose you have a sample data set   23, 43, 23, 20, 68, 68, 54, 154, 74, 43, 23, 11, 11   Ex.1…

A: The sample data set is 23, 43, 23, 20, 68, 68, 54, 154, 74, 43, 23, 11, 11.

Q: Using the provided data and R, do a test to determine whether the average number of residents in the…

A: Given: 2845, 2054, 3988, 2662, 3276, 3676, 4386, 3959, 8161, 4579, 2594, 3060, 4656, 4585, 2449,…

Q: Use the sample data to test the claim that the mean age of personal cars is older than the mean age…

A: Let μ1 denotes the mean age of cars, and let μ2 denotes the mean age of taxis. Mean age of car is…

Q: The average number of cavities that thirty-year-old Americans have had in their lifetimes is 9.  Do…

A: Note- Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: a. For this study, we should use Select an answer b. The null and alternative hypotheses would be:…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: The size of fish is very important to commercial fishing. A study collected the lengths of Atlantic…

A: 31, 44, 45, 45, 46, 48, 48, 48, 48, 49, 50, 50, 50, 51, 52, 53, 53, 54, 60, 67

Q: g. For the entire data (North and South combined), what is the cumulative frequency of the $200 to…

A: From given data we have

Q: The average number of cavities that thirty-year-old Americans have had in their lifetimes is 7.  Do…

A: Given data is 4,8,5,7,7,4,8,5,4,4,6sample size(n)=11

Q: Use a significance level of  0.05. Test the claim that the mean is that the stocks broke even(no…

A: The data is as follows:Since, the computed values are from the data with , consider them as the…

Q: According to Our World in Data, male heights follow a normal distribution with µ =178.4 cm and o=…

A:

Q: The average number of cavities that thirty-year-old Americans have had in their lifetimes is 8.  Do…

A: α = 0.01 level of significance n = 15

Q: The average fruit fly will lay 421 eggs into rotting fruit. A biologist wants to see if the average…

A: 1.   In this case the population distribution is normal and the population standard deviation is not…

Q: The life span in Honolulu is approximately normally distributed. The mean life span is 77 years. A…

A: Given data is19,27,47,56,66,68,69,71,72,75,77,78,81,83,84,85,86,93,94,97n=20α=0.01Mean(x)=Sum of the…

Q: The average retirement age in America is 62 years old. Gerardo thinks that yoga teachers owners…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: The average retirement age in America is 64 years old. Brianna thinks that yoga teachers owners…

A: The random variable retirement age follows normal distribution. We have to test whether the yoga…

Q: Weights of 9 students (in lbs) before and after a month-long training schedule are given below. Test…

A: Given: Pre x Post y 124 133 152 145 129 131 144 150 150 164 152 132 138 130 161…

Q: For the given dataset, find the range? 21,13,24,31,18,16,34,11

A: Given that  The data set 21,13,24,31,18,16,34,11

Q: Assume the samples are random and independent, the populations are normally distributed, and the…

A: For the given data Perform Anova single factor

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.