Mean deviation = (0.129 + 0.131 + 0.136 + 0.130 + 0.128 + 0.127)/6 = 0.1302
Standard deviation:
0.129-0.1302 = -0.0012 = 1.44 x 10^-6
0.131-0.1302 = 0.0008 = 6.4 x 10^-7
0.136-0.1302 = 0.0058 = 3.364 x 10^-5
0.130-0.1302 = -0.0002 = 4 x 10^-8
0.128-0.1302 = -0.0022 = 4.84 x 10^-6
0.127-0.1302 = -0.0032 = 1.024 x 10^-5
variance = 1.0168 x 10^-5
standard deviation = 0.0032
The value 0.136 is far off and should be thus rejected from the set of data.
It is known from many careful measurements that the concentration of magnesium in a material is...
Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete parts (a) through (b) below. Click the icon to view at distribution table a. What is the number of degrees of freedom that should be used for finding the critical value ty/z? df (Type a whole number b. Find the critical values/corresponding to 95% confidence level (Round to two decimal places as needed) Enter your answer in each of the boxes MacBook...
The weight percent of silicon in six different rock samples, each containing different amounts of silicon, was measured by two different methods. The results are given in the table. Sample Method A Si wt% Method B Si wt% 1 11.570 11.520 2 15.380 15.320 17.950 17.900 22.840 22.810 25.110 25.150 27.070 27.030 Determine tak teale Determine table at the 95% confidence level. A list of t values can be found in the Student's t table. ttable = Are these methods...
You will then computea statistic from the raw date. You can find the p value associated with this statistic in the same manner by locating where would le within the row that corresponds to the appropriate degrees of freedom. If this value is below the a value, you will reject the nutrypothesis in favor of an alternative hypothesis, which states that the means are significantly different DATA ANALYSIS AND HYPOTHESIS TESTING Art wure of a well-designed experiment la replication, which...
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Provide an appropriate response. 1) Many people think that a national lobby's successful fight against gun control legislation is reflecting the will of a minority of Americans. A random sample of 4000 citizens yielded 2250 who are in favor of gun control legislation. Estimate the true proportion of all Americans who are in favor of gun control legislation using a 98% confidence interval. Express the...
Do one of the following, as appropriate. (a) Find the critical value z/2. (b) find the critical value t/. (c) state that neither the normal nor the t distribution applies. Confidence level 99%; n = 16; o = 20.2; population appears to be normally distributed. Click here to view a table of critical t-values. Click here to view page 1 of the standard normal table Click here to view page 2 of the standard normal table - X t-table Find...
eBook Video Exercise 10.1 (Algorithmic)) Consider the following results for two independent random samples taken from two populations. Sample 1 Sample 2 n 50 n2 35 1-1=13.6 X2= 11.1 a. What is the point estimate of the difference between the two population means? | b. Provide a 90% confidence interval for the difference between the two population means (to 2 decimals). c Provide a 95% confidence interval for the difference between the two population means to 2 decimals eBook Video...
(a) Does the evidence suggest that community
college transfer students take longer to attain a bachelor's
degree? Use an α = 0.05 level of significance. Perform a hypothesis
test. Determine the null and alternative hypotheses.
(b) Determine the test statistic (t =
?) and the P-value (P = ?). Round to two decimal
places as needed.
(c) Construct a 90% confidence interval for
(μcommunity college − μno transfer) to
approximate the mean additional time it takes to complete a
bachelor's...
t-Distribution Area in Right Tail
Degrees of Freedom 0.25 0.2
0.15 0.10 0.05
0.025 0.02 0.01
0.005 0.0025 0.001 0.0005
1 1.000 1.376 1.963
3.078 6.314 12.706
15.894 31.821 63.657
127.321 318.309 636.619
2 0.816 1.061 1.386
1.886 2.920 4.303
4.849 6.965 9.925
14.089 22.327 31.599
3 0.765 0.978 1.250
1.638 2.353 3.182
3.482 4.541 5.841
7.453 10.215 12.924
4 0.741 0.941 ...
The following ANOVA model is for a multiple regression model
with two independent variables:
Degrees
of
Sum
of
Mean
Source
Freedom
Squares
Squares
F
Regression
2
60
Error
18
120
Total
20
180
Determine the Regression Mean Square (MSR):
Determine the Mean Square Error (MSE):
Compute the overall Fstat test statistic.
Is the Fstat significant at the 0.05 level?
A linear regression was run on auto sales relative to consumer
income. The Regression Sum of Squares (SSR) was 360 and...