dçcrease if a 95% rather than 99%% confidence interyal is chosen? Explain why. The valun of Zg width of u LoNETin interuc Pou be decres. The Roman Arches is an Italian restaŭrant. The Mañager wants to estimate the average 2. amount a customer spends on lunch Monday through Friday. A random sample of 115 customers' lunch tabs gave a mean of $9.74 with a standard deviation of $2.93. Construct and interpret a 90% confidence interval for the average amount spent on lunch by all customers. Cholesterol level in a particular male population is assumed to follow a normal distribution. A random sample of size 16 has a sample mean of 245 and a standard deviation of 32 units. Construct and interpret a 95% confidence interval for the mean cholesterol level in the population. 3. 4. A school reports that the mean number of hours their students study each week is 15 hours. The students believe the mean is not 15 hours. To test their claim, they select a random sample of 49 students and find the sample mean is 16.163 hours with a sample standard deviation of 4.41 hours. Is there any evidence to support their belief at a 0.05 level of significance?

Q: If a snowblower is 7 times more than the other objects at a yard sale and you made $480 then how was…

A:

Q: How many license plates can we have of three digits followed by three letters? We allow repeated…

A: Since, there are 10 possible digits for the numbers (0 to 9), and 26 possible letters (A to Z). As,…

Q: do you have the rest of the answers

A: Solution: Given information: n= 8 Sample size x= 6.68 psi Sample mean s=0.75 psi  Sample standard…

Q: Can you pass through all the rooms while going through each door only once? Room 1 Room 2 ++- Room 4…

A:

Q: The double number line shows the price of   cupcake.      Cupcakes   Price(dollars) A…

A: The objective of the question is to find the missing values in the table based on the information…

Q: Max is taking a test. There are 42 questions on the test, some questions worth 3 points, and some…

A:

Q: 14 is 2 times as many as 7

A:

Q: If I have 2933 apple and I add 1 more apple how many do I have.

A:

Q: A number s is subtracted from seven.When the result is divided by three,the quotient is two. What is…

A: Let a number is s. According to the first condition of the question it becomes 7-s. Now from second…

Q: In(2z + 1) lim O 00 01 0 2 00

A:

Q: Every day in Mrs. Yan's class, a student's high score is posted on the boardThe high score for the…

A:

Q: 6 more than the number c

A:

Q: how did the answer to T become -5.31 in step 2

A: The sample mean is 12.36%. The hypothesized mean is 13.4%. The standard deviation is 3%. The sample…

Q: How many three-digit numbers have the sum of their digits equal to 19? There are three-digit numbers…

A:

Q: In order to pass a class, you need an average of 90 on 7 exams. If your test scores were 98, 86, 90,…

A:

Q: One more than four times a number b is five

A:

Q: Nine more than a number is 12

A: See this solution in below.

Q: What is one less than twice a number

A:

Q: A student needs a 90 average to receive an A in his math class. On the first 4 tests he scored 75,…

A: we have to find grade..

Q: Seven subtracted from the product of 5 and a number is at most 18

A: The objective is to solve the above question.

Permutations and Combinations

If there are 5 dishes, they can be relished in any order at a time. In permutation, it should be in a particular order. In combination, the order does not matter. Take 3 letters a, b, and c. The possible ways of pairing any two letters are ab, bc, ac, ba, cb and ca. It is in a particular order. So, this can be called the permutation of a, b, and c. But if the order does not matter then ab is the same as ba. Similarly, bc is the same as cb and ac is the same as ca. Here the list has ab, bc, and ac alone. This can be called the combination of a, b, and c.

Counting Theory

The fundamental counting principle is a rule that is used to count the total number of possible outcomes in a given situation.