Answer and explanation:
The standard error is used to measure the difference between the sample mean and the population mean. It uses standard deviation to measure the level of deviation of the sample mean from the population mean. In other words, the accuracy of the sample mean by way of representing the mean of the population is measured using the standard error. If there is significant difference then standard error is bigger usually non-zero while it is less significant with smaller standard error.
Answer:
And for this case the confidence interval is given by:
Since the confidenc einterval not contains the value 0 we can conclude that we have significant difference between the two population proportion of interest 1% of significance given. So then we can't conclude that the two proportions are equal
Step-by-step explanation:
Let p1 and p2 the population proportions of interest and let and the estimators for the proportions we know that the confidence interval for the difference of proportions is given by this formula:
And for this case the confidence interval is given by:
Since the confidence interval not contains the value 0 we can conclude that we have significant difference between the two population proportion of interest 1% of significance given. So then we can't conclude that the two proportions are equal
Answer:
11346 cars
Step-by-step explanation:
Divide $79422 by $7 to find out how many cars need to pay for the bridge for the city to meet its goal.
Answer:
y = 6x+1 . . . . . y ≠ 0
Step-by-step explanation:
Multiplying by y gives the linear equation ...
(1+y)/2 -(3x +1) = 0
1 +y = 2(3x +1) . . . . . add (3x+1), multiply by 2
y = 6x +1 . . . . . . . . . . eliminate parentheses, subtract 1
There are an infinite number of (x, y) pairs that will satisfy this equation. The above equation gives the required relation between the x and y values. The equation is undefined for y=0, so that is not a solution.