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Arisa [49]
3 years ago
13

F(x)=2x 2 −15Find f(−2)Find f(−2)

Mathematics
1 answer:
Misha Larkins [42]3 years ago
4 0

Answer:

Step-by-step explanation:

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If two samples are selected from the same population, under what circumstances will the two samples have exactly the same t stat
WARRIOR [948]

If two samples are selected from the same population, the two samples have exactly the same t statistics if the samples are same size and have the same variance and mean

The t-statistic is the ratio of the departure of the estimated value of a parameter from its hypothesized value to its standard error.

Variance is the expectation of the squared deviation of a random variable from its population mean or sample mean.

Mean is the average of the given numbers and is calculated by dividing the sum of given numbers by the total number of numbers

Hence, If two samples are selected from the same population, the two samples have exactly the same t statistics if the samples are same size and have the same variance and mean

Learn more about t-statistic here

brainly.com/question/15236063

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4 0
1 year ago
The marked price of
Tju [1.3M]

Answer:

MP =  Rs. 1500

SP =  Rs. 1230

Step-by-step explanation:

Let the Cost Price (CP) be x

<u>Then Market Price (MP):</u>

  • MP = x+ 20% = 1.2x

<u>Discounted Selling Price (SP):</u>

  • SP = MP - 18% = 0.82*1.2x = 0.984x

<u>Since the difference between CP and SP is Rs.20:</u>

  • x - 0.984x = 20
  • 0.016x = 20
  • x= 20/0.016
  • x = 1250

<u>Then:</u>

  • MP = 1.2*1250= Rs. 1500

and

  • SP = 1500*0.82 = Rs. 1230

3 0
3 years ago
Helpppppppppppp ASAP THANKS
strojnjashka [21]

Answer:

c or d

Step-by-step explanation:

4 0
3 years ago
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The value of y varies directly as x and y is 9 when x is -3 what constant of variation k?
Lady bird [3.3K]
Y/x=k

when y=9, then x= -3
        9/-3=-3
⇒ k= -3
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2 years ago
Please help and choose letter choice
Orlov [11]
The correct answer is a

4 0
3 years ago
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