19/20 because you need to find a common denominator then add.
Answer:
Systematic Sampling
Step-by-step explanation:
Systematic sampling is a form of sampling in which the researcher applies probability sampling such that every member of the group is selected at regular intervals or periods. The researcher picks a random starting point and after an interval must have elapsed, another sample member is chosen. This sampling method is similar to that disclosed in the question because it has the key qualities.
For example, an interval is given after the 1000th soda is tested for quality. This means that the interval for testing can accommodate 1000 sodas after which the first member is tested again. So, this is a Systematic sampling method.
The last step is wrong since if you divide an inequality by a negative, you must also flip the direction of the inequality sign. To solve correctly:
- 6x + 10 > - 44
- 6x > -54
x < 9
i hope this helps! :D
Answer:
We can find this probability with this difference
If we use the normal standard distribution or excel we got:
Step-by-step explanation:
Let X the random variable that represent the weights for a can of pumpkin pie, and for this case we know the distribution for X is given by:
Where and
We are interested on this probability
We can use the z score formula given by:
Using this formula we got:
We can find this probability with this difference
If we use the normal standard distribution or excel we got: