Can someone please help me????
2 answers:
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Answer:
50 g butter
45 g caster sugar
5 g chocolate chips
Step-by-step explanation:
First do 300 over 400 and you will get 1/4. That means he used 1/4 less of his ingredients. So you multiply everything by 1/4 and you will get 50 g of butter, 45 g of caster sugar, and 5 g of chocolate chips. If my explanation is not clear enough, there is work to show you the step.
Answer:
And we can find this probability with this difference and using the normal standard table or excel:
And the result is illustrated in the figure attached.
Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the variable of interest of a population, and for this case we know the distribution for X is given by:
Where and
We are interested on this probability
And the best way to solve this problem is using the normal standard distribution and the z score given by:
If we apply this formula to our probability we got this:
And we can find this probability with this difference and using the normal standard table or excel:
And the result is illustrated in the figure attached.
