M=26
S=0.06
A)X1=25.9
Z1=X1-M/S
=25.9-26/0.06
=-1.67
P(X1<25.9)
=P(Z1<-1.67)
=0.5-0.4525
=0.0475. Or 4.75%
B)X1=25.86. X2=26.14
Z1=x1-M/s
=25.86-26/0.06
=-2.33
Z2=x2-M/s
=26.14-26/0.06
=2.33
P(-2.33<z<2.33)
=0.4909+0.4909
=0.9818. Or 98.18%
C) probability rod discarded =0.0091 X 2 =0.0182
E(x)=np
=5000*0.0182
=91
d)probability to manufacture rod between 25.9 and 26.1
=0.4525x2
=0.905
E(x)=np
=1000x0.905
=9050
□(Round to four decimal places as needed) DRoundtofour decinal places as needed) O Type here to
Round to four decimal places as needed)
Round to four decimal places as needed.) ol
0-19 21 145 390 1316 Round to four decimal places as needed 0-19 21 145 390 1316 Round to four decimal places as needed
How? X10.6.30 (Type an integer or a decimal. Round to seven decimal places as needed.)
The area of the shaded region is Round to four decimall places as needed) in the answer box Type here to search
Round to four decimal places as needed. Thank you! Assume a member is selected at random from the population represented by the graph. Find the probability that the member selected at random is from the shaded area of the graph. Assume the variable x is normally distributed SAT Critical Reading Scores 200<x<375 u = 506 o = 123 200 375 800 Score The probability that the member selected at random is from the shaded area of the graph is (Round...
The probability is Round to four decimal places as needed.) b. it 16 adult females are randomly selected, find the probability that they have puise rates with a mean less then 78 beats per minute The probability is Round to four decimal places as needed.) c. Why can the normal distribution be used in part (b), evon though the samplo size does not xcoed 30 O A. Sinoe the distribution is of sample means, not individuals, the disibution a normal...
a) The probability is (Round to four decimal places as needed.) B) the store takes in at most $. ? (Round to two decimal places as needed.) A grocery store's receipts show that Sunday customer purchases have a skewed distribution with a mean of $33 and a standard deviation of $19. Suppose the store had 312 customers this Sunday. a) Estimate the probability that the store's revenues were at least $10,800 b) If, on a typical Sunday, the store serves...
sxS (Round to three decimal places as needed ) b Construct a 90% contence interval estrate ofthe po uta onr ortion tofonine shoppers who would be inuenced to spend more money (ine weh dsorts of red while shoppin sxsDRourd to three decrnal places as needed ) %confidence nerval est c.cnstruct a 9 ate of the po ulation roportio or on est o rs who woud tenn ned to spend more money on. een ract S(Round to three decimal places as...
The P-value is.................(Round to four decimal places as needed.) The P-value for this hypothesis test is............................(Round to three decimal places as needed.) The P-value for this hypothesis test is................................(Round to three decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is....................(Round to three decimal places as needed.) Trials in an experiment with a polygraph include 97 results that include 22 cases of wrong results and 75 cases of correct results. Use a...