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?

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Q: In a math class, one of your 4 test scores is dropped. On the first three tests, you have the…

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A: Given:  NT=21T2-80T+24 , 4<T<34 Tt=6t+1.8T

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A: Given that: 12 model cars.   8 shelves display 1 car.

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Q: What’s 2 to the 4th power

A: We have to find 2 to the 4th power. We know that for x2 we call it as x to the 2nd power for x3 we…

Q: The reciprocal of 8

A: The objective of the question is determine the  reciprocal of 8.

Q: Topic 16: Solving linear equations 5. Louis created the following table to solve a linear equation.…

A: topic - linear equations

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Q: how did you get 17 and 21 to be multiplied in step 2?

A: In Step 2, 17 and 21 are not multiplied. It is 17.21. The value of skin surface area of the person…

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A: The given function fx=5x. (a) Obtain the function fx=5x shifting 2 units upward as shown below. In…

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Q: ass, one of your 4 test scores is dropped. On the first three tests, you have the following scores:…

A: The formula for the mean of a sample is, The sample size (n) is 4. The sample mean is x is 75.…

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A: A). a=$3000,  r=3%=0.03  &  k=4.   B). Put a=$3000,  r=0.03,  k=4 & t=7 in At=a1+rkkt, we…

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A: 1) f(g(3))  Since ,  g(3)= 5 So,.     f(g(3))=f(5) = 1 2),  g(f(1))  Since.   f(1) = 3 Then ,…

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A: Consider the given graph: Observe the following: Maximum input is 2. Minimum input is -3. Maximum…

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Q: In a math class, one of your 4 test scores is dropped. On the first three tests, you have the…

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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.