A state representative wishes to estimate the mean number of women representatives per state legislature. A random sample of 17 states is selected, and the number of women representatives is shown. Based on the sample, what is the point estimate of the mean? Find the 90% confidence interval of the mean population. (Note : The population mean is actually 32.2.) 4 32 33 34 24 27 15 48 25 16 19 31 18 39 21 58 130

Q: The average salary of 64 employee was 5400 and the sample standard deviation was 280. Find the 90%…

A:

Q: Refer to the accompanying data set and construct a 95% confidence interval estimate of the mean…

A: Solution: The pulse rates for males and females are given.

Q: To estimate the average gestation time (time being carried in the womb between conception and birth)…

A:

Q: Among various ethnic groups, the standard deviation of heights is known to be approximately three…

A:

Q: The annual earnings​ (in dollars) of 35 randomly selected microbiologists are shown in the data…

A: a) Sample mean: sample mean=∑xin=99,606+81,246+...+82,81535=2,516,49735=71,900 Therefore, the sample…

Q: The president of an all-female school wants to know if the students at her school studied more or…

A:

Q: The annual earnings (in dollars) of 35 randomly selected microbiologists are shown in the data…

A: Given,   Sample size = 35   Since the population standard deviation is not known, use t-distribution…

Q: When calculating the confidence interval for a population mean, which distribution is used?

A: Confidence interval for mean: When the sample size is large (n>30) and population variance (or…

Q: What is the number of data values? O 50 O 78 O 120 49 O 76 How many degrees of freedom are used for…

A: data value 76

Q: Among various ethnic groups, the standard deviation of heights is known to be approximately three…

A:

Q: 1. A city health department wishes to determine if the mean bacteria count per unit volume of water…

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: For the provided sample​ mean, sample​ size, and population standard​ deviation, complete parts​ (a)…

A: Given data,n=100x=22σ=3z-value at 95% confidence is Zc=1.96

Q: If a confidence interval for the mean is (34≤μ≤86)(34≤μ≤86), a) What is the point estimate?    b)…

A: (a) The point estimate is 60, which is obtained below: Point estimate=Upper limit+lower…

Q: 1. Consider the data set below, which gives a sample of fifteen students randomly selected and asked…

A:

Q: Construct the indicated confidence interval for the population mean . Assume c = 0.98, = 101.3, =…

A:

Q: The Municipal Transit Authority wants to know if, on weekdays, more passengers ride the north bound…

A: Given information- We have given two sample of the 8:15 train and 8:30 train. Sample 1 for 8:15…

Q: airline is considering charging a two-tiered rate for checked bags based on their weight. Before…

A:

Q: After interviewing 30 third-year students, it is found that the sample mean of their happiness index…

A: Given,sample size(n)=30sample mean(x¯)=72standard deviation(s)=37degrees of…

Q: Use the given confidence interval to find the margin of error and the sample mean. (15.3,22.3)

A: We have to find sample mean and margin of error..

Q: The effectiveness of a weight loss program is to be evaluated by measuring the weight of eight…

A: Obtain the 95% confidence interval for the mean difference. The 95% confidence interval for the mean…

Q: The annual earnings (in dollars) of 35 randomly selected microbiologists are shown in the data…

A: Given data : 44811, 47149, 47536, 50988, 51520, 55041, 56802, 58228, 60741, 61088, 61376, 63335,…

Q: In a study of government financial aid for college​ students, it becomes necessary to estimate the…

A:

Q: A researcher in campaign finance law wants to estimate the proportion of elementary, middle, and…

A: Given, Margin of error, E = 0.05 Confidence level = 95%

Q: The average salary of 64 employee was 5400 and the sample standard deviation was 280. Find the 95%…

A: It's a t distribution as the population standard deviation is unknown

Q: A bank wishes to estimate the mean credit card balance owed by its customers. The population…

A: Determine the number of customers needs to be sampled. The number of customers needs to be sampled…

Q: Consider the following data set below. Find the LOWER INTERVAL of the population mean at 98%…

A: Given: 14 12 11 13 Confidence level = 0.98 So, α=1-0.98            =0.02

Q: What is the smallest sample size required to provide a 95% confidence interval for a mean, if the…

A:

Q: Twenty people in one large metropolitan area were asked to record the time (in minutes) that it…

A: x x-x (x-x)2 30 -5.1 26.01 42 6.9 47.61 35 -0.1 0.01 40 4.9 24.01 45 9.9 98.01 22 -13.1…

Q: A survey of 25 randomly selected customers found the ages shown (in years). The mean is 33.16 years…

A: Given: n = 25 X = 33.16 S = 9.89 Formula Used: Confidence Interval = X ± Sntn-1               {When…

Q: he following is sample data taken from a distribution where the underlying population is normally…

A:

Q: listed below are lengths (mm) of cuckoo eggs 22.05  22.05  22.05  22.05  22.05  22.05  22.05  22.05…

A: a) The best point estimate of the population mean µ is obtained below:

Q: The annual earnings (in dollars) of 35 randomly selected microbiologists are shown in the data…

A: Given data The annual earnings(in dollars) of 35 randomly selected micro biologists 99,621 80,513…

Q: A study is to be conducted to estimate the daily water consumption per person. If the population…

A:

Q: The annual earnings​ (in dollars) of 35 randomly selected microbiologists are shown in the data…

A:

Q: Refer to the accompanying data set and construct a 95% confidence interval estimate of the mean…

A: The value of sample mean and standard deviation is, The degree of freedom is, df=n-1   =40-1   =39…

Q: Person 1 Person 2 Person 3 Person 4 Person 5 Person 6 Person 7 Person 8 Person 9 Height…

A: The mean of observations, X¯=∑XiN, where N number of observations. The Sample standard deviation,…

Q: The following small data set represents a simple random sample from a normally distributed…

A: From the provided information, The data values are as follow: 43, 63, 53, 50, 58, 44, 53, 53, 52,…

Q: Construct a 95% confidence interval for the slope. Round the answers to at least four decimal…

A: Given is the sample of 8 pairs of heights of fathers and sons.

Q: If a confidence interval for the mean is (41≤μ≤84)(41≤μ≤84), a) What is the point estimate?    b)…

A: a) What is the point estimate?

Q: A company wants to estimate the mean time spent by clients waiting for their appointments in the…

A: Given data is…

Q: How many subjects would be needed to ensure that a 95% confidence interval estimate of BMI had a…

A: Given data set is28,21,37,38,24,28,38,47,27,32,36,43sample size(n)=12confidence level=95%Margin of…

Q: Height (inches) 75 62 64 63 62 70 69 70 67 Weight (lbs) 325 250 280 220 235 265 200…

A: To construct confidence interval to estimate the mean height and the mean weight: First, find the…

Q: If a confidence interval for the mean is (43≤μ≤82)(43≤μ≤82), a) What is the point estimate?    b)…

A: Given the confidence interval for the population mean in tri-linear inequality form: Hence,

Q: Given below are the sodium contents in milligrams for seven brands of hot dogs rated as “very good”…

A:

Q: In an effort to estimate the mean amount spent per customer for dinner at major New Orleans…

A: Sample mean = x̅ = 24.8 Sample size = n = 49 Population S.D = σ = 5 Standard Error = σ/√n  =…

Q: 3. A random sample of 16 drinks from a soft drink machine has the following contents(mi): 250 280…

A:

Q: A bank wishes to estimate the mean credit card balance owed by its customers. The population…

A: We have to find sample size ....

Q: Among various ethnic groups, the standard deviation of heights is known to be approximately three…

A:

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.