Answer: =1/2x+1/3
Step-by-step explanation:
Answer:
Step-by-step explanation:
Firstly,we need to find the mean, median and mode to enable us know the type of distribution it exhibit.
Mode-data with the highest frequency that is data that has the highest repetition which is 59.
Median-the middle data which is 75.
Mean-average of the data that is addition of the data divided by 25 which gives 75.4 approximately equals to 75
Distribution is unimodal symmetric if it has one clear peak(one mode) and mean = median , so Option A is right
Distribution is skewed left if the mean is less than median and the mode is less than the median that is mean is less than the median, and they are both less than the mode. So option B is wrong.
A distribution is uniform if all outcomes are likely to be the same,it is usually a rectangular shaped distribution. So option C is wrong
A distribution is bimodal if it has two modes. This means that there are two data values that tie for having the highest frequency but as for this data we have only one data with the highest frequency so option D is wrong
Option A is correct
Answer:
2.5 half-lives
Step-by-step explanation:
Find 
in 
given 
is the amount after the time 
, 
`is the initial amount, is the half-life
We know that after half-life there will be twice less the initial quantity:
.
Simplifying gives 
Plugging this into the initial equation, we obtain that 
or 
Finally, just plug in the given values and find the unknown one.
From 
, we have that 
= 
So you should get: 
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