I want to change prob setting to be middle 90% interval

```
n<-175
sim_d_and_fit <-
function
(seed, n , probs =c(0.05, 0.95) {
mu_n <-0
mu_c <-0.3
set.seed(seed)
d <-
tibble(group = rep(c("normal","covid"), each = n)) %>%
mutate(treatment = ifelse(group =="normal",0,1),
y = ifelse(group =="normal",rnorm(n, mean = mu_n, sd =1),
rnorm(n, mean = mu_c, sd =1)))
update(fit,
newdata = d,
seed = seed) %>%
fixef() %>%
data.frame() %>%
rownames_to_column("parameter") %>%
filter(parameter =="treatment")
}
```

```
n_sim <-100
s10 <-
tibble(seed =1:n_sim) %>%
mutate(b1 = map(seed, sim_d_and_fit, n =175)) %>%
unnest(b1)
mutate(width = Q95 - Q5)
```

I got that error

```
Error in mutate(width = Q95 - Q5) : object 'Q95' not found
```