Search & Filtering
. Use the Bisection method to find solutions, accurate to within 10^−5 for the following problems. a. 3x − e^x = 0 for 1 ≤ x ≤ 2 b. 2x + 3 cos x − ex = 0 for 0 ≤ x ≤ 1 c. x^2 − 4x + 4 − ln x = 0 for 1 ≤ x ≤ 2 and 2 ≤ x ≤ 4 d. x + 1 − 2 sin πx = 0 for 0 ≤ x ≤ 0.5 and 0.5 ≤ x ≤ 1
You are apart-time crew at a fast food chain.Suppose you serve a certain number of customers every hour.10,12,14 in 3 hours you have served.Assume that samples of size n=2 are randomly selected without replacement from the population.Find the population mean μ and the mean of the sampling distribution of the means
THE FOLLOWING ARE THE HEIGHTS OF FOUR STUDENTS IN CENTIMETERS. SUPPOSE SAMPLES SIZE 2 ARE TAKEN FROM THIS POPULATION OF FOUR STUDENTS.
STUDENTS HEIGHT (in cm)
CARDO 125
ALYANA 120
JOAQUIN 130
FLORA 110
a. how many samples are possible?
b. construct the sampling distribution of the sample means
c. construct the histogram of the sampling distribuyion of the sample means
The following table shows the regression results of 33 listed textile firms of DSE observed over 6 periods from 2012-2017 and form a panel data of 198 observations. Where STDR stands for short term debt ratio, LTDR stands for long term debt ratio, ER stands for Equity ratio and Firms age and ROE stands for return on equity (profitability ratio).
Regression Results of ROE:
ROE Coef Std. Err. t p>|t| STDR -.163 .063 -2.60 001 LTDR -.206 .088 -2.33 .02 ER -.431 .059 -7.38 0.00 Firm's Age -.003 .0007 -3,79 0.00 Constant .458 .054 8.44 0.00 F(5, 198) =16.9 Ptob> F =0.00 R-squared =0.594 Adj R- squared =0.25 Numbct of obs =198
i) Identify the dependent and independent variables with proper justifications.
ii) Write out the multiple regression equation using the above table.
iii) Interpret the regression coefficients.
Using the t-table, give the confidence coefficients for each of the following:
1. n = 12, 95% confidence
2. n = 15, 95% confidence
3. n = 21, 99% confidence
4. n = 23, 95% confidence
5. n = 25, 99% confidence
How many possible samples of size n = 3 can be drawn from a population of size 10?
Determine the area of the normal distribution with mean of 10, standard deviation of 5 and scores between 5 to 12
Assume that when adults with smartphones are randomly selected, 39% use them in meetings or classes. If 8 adult smartphone users are randomly selected, find the probability that exactly 5 of them use their smartphones in meetings or classes.
As the sample size n increases, the shape of the distribution of the sample means taken from a population with the mean and standard deviation will approach a normal distribution. This distribution will have a mean and standard error.
A. Sample mean
B. Central limit theorem
C. Sample size
D. Sampling distribution
A study was made of a sample of 25 records of patients seen at a chronic disease hospital
on an outpatient basis. The mean number of outpatient visits per patient was 4.8, and the
sample standard deviation was 2. Can it be concluded from these data that the population
mean is greater than four visits per patient? Let the probability of committing a type I error
be 0.05. What assumptions are necessary
