We want to test the null hypothesis that population mean = 10. Using the following observations, calculate the t-test statistic value. Observations are 9, 10, 4, 5, 6, 7, 8. OA-3.67 O B. 3.67 OC.4.90 O D.4.90

Q: Q.10) a) What are the differences between the data and information? b) Explain the differences…

A: a) DATA is a collection of facts, while INFORMATION puts those facts into context.   DATA: Data is…

Q: nfidence interval for the average net change in a student's score after completing the course.…

A: We have given that,  The data set are : 12, 11, 15, 14, 22 Then,  We will find the 80% confidence…

Q: Which range of values is likely to contain the population parameter

A: here given , An internet supplier of refilled ink jet printer cartridges sold cartridges to 30,000…

Q: 6. Calculate the sample size needed in order to estimate the true proportion of defective in a large…

A: Confidence interval are constructed by using z distribution.

Q: Teachers' Salaries The average annual salary for all U.S. teachers is $47,750. Assume that the…

A:

Q: Q2. A laundry for car wash found that the average, for small size car, cleaning time is 5 mins in…

A:

Q: The data given below relate to the marks obtained by 20 students in two subjects A and B. Prepare a…

A:

Q: Can you explain further the breakdown for part c please?

A:

Q: For problems 1 and 2, determine whether the evaluated group is a population or a sample.

A: here use basic of sample and population

Q: For the periods 2014 to 2019, ESKOM’s electricity percentage price adjustments are given in the…

A: Given the Average percentage price adjustments for the periods 2014 to 2019 as Year Percentage…

Q: Q2) A bag contains 5 white balls and 5 black balls; another contains 3 white balls and 7 black…

A: Given bag 1 contains 5 white balls and 5 black balls; bag 2 contains 3 white balls and 7 black…

Q: Use multiple linear regression to fit the following tabulated data: x1 4.5 6. 75 19 12 x2 6. 8.5 11…

A:

Q: A box contains 20 chocolates. 5 of the chocolates are black chocolate flavour while the balances are…

A:

Q: The table presents gasoline mileage performance for 25 automobiles (Source: Motor Trend, 1975). Y X1…

A: Enter the data into the excel sheet as follows: Let's code A as 1 and M as 0 in column L under X11…

Q: In September 2016, a Gallup poll asked the following question of 1020 adults. In general, how much…

A: Option A is the answer.

Q: 10 marks for a The following table shows the number of candidates who scored 0, 1, . particular…

A: We need to calculate the mean, median and mode of the distribution of marks and describe the feature…

Q: 3:20. Represent the following information in suitable tabular form with proper rulings and headings…

A:

Q: 9. If u =x+ y, v = x - y and x and y are independent, show that In other words var (x±y) = var (x) +…

A:

Q: 6. Which sampling distribution do we use in testing the hypothesis when conducting the Analysis of…

A: According to the given information in this question We need to identify the correct option

Q: At a certain restaurant, there is a 60% probability that the candles on your table will be red. If…

A:

Q: A family of sampling methods where the results obtained from the sample can be projected onto the…

A: Given that  A family of sampling methods where the results obtained from the sample can be projected…

Q: Total plasma volume is important in determining the required plasma component in blood replacement…

A: Given that, random sample of 42 male firefighters are tested and that they have a plasma volume…

Q: Ç. State whether the given statement is type I or type Il error. 1. On a moonlit night, a young man…

A: Given that  1. On a moonlit night, a young man declares that there are two moons.   2. A man plans…

Q: A) Find the mathematical expectation of the dollar amount of his raise at his current job. B)…

A: here given , Andy earns $62,000 a year at an accounting firm. Each year, he receives a raise.Andy…

Q: 3. An experiment was conducted to investigate two factors using the analysis of factor has 3 levels,…

A:

Q: QUESTION 19 Results that are significant indicate that the data has proven your hypothesis. True O…

A: From the given information in question  We answer the correct option

Q: How did you get the 2.201 and 0.05

A:

Q: what is the 95th percentile in the t-distribution if the sample size is 25?

A: Given Information: n=25Type of distribution=t distributionTo calculate=95th percentile

Q: Estimate the expenditure expenditure on Food and Entertainment when on Accommodation is $ 200.

A:

Q: plete the table; then determine whether the null hypothesis would be rejected using 95% level of…

A: Given : n x Hypothesized proportion  p0 120 21 0.05 138 32 0.07 200 45 0.1 392 102 0.18

Q: 1. Given the scores of students, make a frequency distribution table with class of 8. 2. Find the…

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

Q: The last number is 18 not 1

A:

Q: The probability of drawing (2 :blue ball after addition is

A:

Q: You just completed a small research project for your psychology class concerning the effects of an…

A: Rules of mean and standard deviation EaX+b=a×EX+bsdaX+b=a×sdX a) E[X] = 20.1 sd[X] = 2.7 b = -3

Q: A market research firm interested in finding out the effects of increasing the length of…

A: Given that - A market research firm interested in finding out the effects of increasing the length…

Q: Source Amount Product Payment Paypal Region East Web 20.85 Book West Credit Web 15 25 Book

A: Given: The data given is as below Region Payment Source Amount Product East Paypal Web 20.85…

Q: For number 6-9: In a recent study of 35 Grade 3 pupils, the mean number of hours per week that they…

A: Given that, in a recent study of 35 Grade 3 pupils, the mean number of hours per week that they…

Q: 1. Calculate the 6th decile and interpret the result. 2. What is the percentile rank of 40? 3. Find…

A: The following data shows the scores of Grade 10 students who took the Summative Test in Statistics:…

Q: A popular theory is that presidential candidates have an advantage if they are taller than their…

A:

Q: B. Identify the parameter and statistic used in each of the following. 1. A researcher wants to…

A: Parameter is a characteristic of population. Whereas statistic is a characteristic of sample.  A…

Q: 1. The average height of a random sample of 200 people from one barangay is 1.6 m. It is known that…

A: here for Q B1 ) sample mean  = 1.6 m  sample size  = n = 200 Population Variance  = 0.16  population…

Q: Let X1, X2, X3 and X4 be a random sample from population with pdf 0 < x < 1 X, fx(x) = 0, otherwise.…

A:

Q: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots…

A:

Q: QUESTION 19 Results that are significant indicate that the data has proven your hypothesis. O True…

A: Given that  Results that are significant indicate that the data has proven your hypothesis.

Q: Two infinitely long parallel lines are a distance a apart, and a needle of length I (! < a) is…

A:

Q: 4. There are 50 students in a class and the professor chooses 15 students at random. What is the…

A: According to the classical definition of probability, the probability of an event is the ratio of…

Q: (е) 1.0 Q.5). Using the information given in Question 4, what is the predicted value of y when x =…

A: Given:

Q: nins 8S 1, A mean of 115.4 and a standard deviation 10.8 were obtained from a random sample of 15…

A:

Q: QUESTION 18 Conducting a one sample z-test rather than a paired samples t-test (same group tested…

A: We have given the following statement.

Q: d. Find the critical value and draw the critical region. e. Draw a conclusion 2. According to…

A: